Hate to rain on your parade, but I just ran several matches in a Gunnlogi equipped with two Small Railguns and watched my gunners cap infantry with one shot repeatedly, many times even getting headshots.

Also, at one point where I was reloading and my Damage Mod was on cooldown, my two gunners destroyed a Madrugar unassisted.

Small railguns and blasters are ok on tanks because it's very stable, unlike a dropship where everything you do moves the ship, including simply firing the gun.

It doesn't change that missiles do massive damage to everything with no real drawbacks, while blasters and rails have weird damage profiles, overheat, and require insane precision.

Your numbers are wrong.

Care to elaborate on that?

Okay, ran some numbers today and did some play tests. Missile turrets are clearly the favored turret to use but why? Because they are the only small turret that isn't broken.

Small missile turret:
Direct damage 455, splash 357.5 over 2.5 meters. Clip size 8
129% effective vs armor, 591.5 per hit (4,695.6 damage per clip)
69% effective vs shields, 314 per hit (2,778.6 damage per clip)
Splash damage is almost equal to a direct hit from a railgun.
Easy to hit infantry from an elevated position.

True damage: As listed but is +29% vs armor, -31% vs shields

Small railgun turret:
Direct damage 377, clip size 24
63% effective vs armor, 237.5 per hit (6,604.3 but overheats at half clip so really is 3,300)
77% effective vs shields, 290 per hit (7,356 but overheats at half clip so really is 3,676)
Almost impossible to hit infantry from an unstable platform.

Ture damage: 263.9 (+7% vs shields, -7% vs armor)

Small blaster turret:
Direct damage 49.4, clip size 150
33% effective vs armor, 16 per hit (2,445 but overheats at half clip so really is 1,222)
44% effective vs shields, 21.7 per hit (2,714 but overheats at half clip so really is 1,357)
Almost impossible to hit infantry from an unstable platform.

True damage: 19 (+8.5% vs shields, -8.5% vs armor)

What is up with these numbers? Your closest range turret (highest risk) has the poorest DPS while missiles are effective out to 250 meters (railguns only go 300) with splash damage almost equal to a direct railgun hit? Then you give railguns and blasters an overheat mechanic that effectively halves their clip size because the overheat duration is almost as long as reloading.
The blaster has such poor DPS that a mass driver and flux grenades are more effective vs tanks/installations. Coupled with the fact that it is almost impossible to hit infantry with it on an unstable platform this turret is literally useless. Period.

The efficiency ratings on hybrid weapons are just messed up but missiles get their actual listed values (+30% vs armor, -30% vs shields). If you were worried about railguns and blasters being overpowered then lower their damage, don't leave these messed up efficiency ratings. You are

Explanation post (will edit in and tell you why you are not more intelligent than swiss cheese)

Edit: Since I'm not responsible for your existence I only give you some advices, why you are totally wrong.

I) Your calculations are wrong:
e.g. Small Missile Turret 455*1,3 is NOT 857

II) Your tests are wrong:
e.g. If you use Small Blasters against Infantry (OH MY GAWD DAISHI USES A HIGH ROF LOW DMG WEAPON AGAINST MOBILE TARGET AND NOT INSTALLATIONS!!!! WHY IS HE SO BETTER THAN ME) it does correctly 110% / 90% vs shield/armor

III) You are Dust University crap and part of the cancer flood of this forum
e.g. no e.g. needed

protip: look for someone who did manage to make it through elementary school and let him do stuff like this

Small Blasters shine on LAVs for anti-infantry, still, LAVs can use all three turrets.

Man, this is a completely different topic, though you are right. Heavy suit and a good driver are mandatory, but the gunner is far to unprotected. We need armor plates all around.

Not all around, I'd say, but maybe 120 degrees forward. That way the gunner can kill what he's shooting at, but flanks will still be effective against him.

The back is important, since keeping the enemies behind you protects the driver.

Yes, but the gunner should be facing the enemy, protecting both him and the driver.

I was talking about armor that's mounted on the turret, so it'd rotate with the gunner.

One mistake? No, your whole text is completely bullsh't and you know that.

I tell you what you did. You equipped one small turret after the other, shot an installation and watched the efficiency rating. That's all you did. Then you came to this forum, generalized your data for everything and stated that blasters and railguns are broken, while they are clearly not, because you are just to dumb to test things properly. Now you give me that dropship vs installation crap, which agains shows why swiss cheese is more intelligent.

Dropships can perfectly fine use railguns (vs infantry/tanks) and missiles (vs tanks/installations), because they need the range.
Tanks can equip all three kinds of turrets, whatever they want to do.
Small Blasters shine on LAVs for anti-infantry, still, LAVs can use all three turrets.

Thanks to people like you CCP crackheads read threads like this and destroy the game more and more.
You want to complain that you can't cut your bread (=installation) with a spoon (=small blaster)? Please leave society.

Edit: Oh, and yeah, some people know how to play (Dropship with small railgun)

http://youtu.be/atnP5DMr0nw?t=1m40s

greets to Dust Fiend

III) You are Dust University crap and part of the cancer flood of this forum
e.g. no e.g. needed