I dont do the pvp gametypes but from the few times I have had the hannibal one come up from a random vehicle req I have noticed that its a bit flawed with its secondary weapon, those blobby blue bomb things. You have to get quite close to the target to actually hit it cause they arc downwards very quickly. This is a problem because even crawlers with thier faceblaster can outrange a longshot BR... Spawn in knights with lightrifles or sniper jackals and they will be shooting you at ranges 5, 6, 10 times the range of those blobs, the charge up railguns are good, but they dont make up for the lack of range on the blob launchers.
ONI and even regular wasp have far greater range and can easily engage then duck back into cover to avoid any determined lightrifle knights