My long standing theory is that Jovians are and have not been for a while technologically superior. Military hardware changes quite often, hell we're nearly having seasonal hardware upgrades in naval warfare spectrum now, new techniques and technologies being applied to the fleet just to remain relative to each other. The last major engagement between empire and jove was 120 years ago.

Originally stated to been 10,000 ships against 8 jovian ships, Amarr revisionist reviewed the data and concluded such combat odds were impossible for the Empress's father and changed the number to 2,000 Amarrian ships and 30 Jove.

I mean the ghost of the jove (left over AIs) even admit we're doing things they were before incapable of thinking of. They never imagined being able to reverse engineer the technology their progenitor race, the sleepers. Yet here we are, not only are we reverse engineering it but going beyond what they have accomplished.

There is also the True Sansha nation which by last reports would indicate they have conquered Jove space, they might as well be extinct.