Look at tachyon/phase lance for an illustration, just comparing stat is pointless(and again, ignore that plasma burn is forward only).
I really though I had provided irrefutable proof by this point.
So I take it you looked at all the objective data I provided and said "you just can't compare the two they are different" and that's where it ended?
Nvm then, I just missed the point.
Onslaught has +200 speed from burndrive with 50% uptime, direction and turnrate don't matter.
That means Onslaught(+Legion) are the fastest and most agile capitals in the game.
Onslaught has 3 forward large slots and 2 awesome builtins, only L slot count matters(except missiles ofc).
Onslaught also has much higher firepower than Conquest/Odyssey(higher cap/lower diss than Odyssey, but we are ignoring that anyway).
So to sum it up, Onslaught has much better mobility AND is stronger than Odyssey.
Whenever you think about getting an Odyssey just go Onslaught, now you have irrefutable proof it's better.
Dunno why this was even a question, numbers do not lie.
Being only able to dodge in one direction is a disadvantage, however you spin it, especially if you don't have exceptional defenses/brawling capability. Being able to dodge backwards at a moderate speed is more valuable than being able to dodge forwards at a high speed, especially if you have very long range weapons as the conquest can use. Kiting is valuable.
Note that jet means it can also move away sideways while keeping guns up.
Gauss cannon + optics tactical/ion/graviton are all 1200 base range. 700 hardflux kinetic DPS is great at that distance, missiles are there for HE.
I do think 1.4 shields are overkill but that just means you keep it at range and use armor more.
As I've written earlier I also prefer the Odyssey but yep, Conquest is definitely not trash.