Do you really believe they are 90C? Just ordered 55C Gens ACE lipos and doubt this C rating is real so 90C.. This is just marketing. ORION has a very bad reputation here, expensive and not reliable. I personnaly never tested one but come on 90C... Why not 150? The cars are already wayyy to powerful for most of the drivers, and this lipo must weight a ton.
Better go with a lighter and smoother car than a powerful heavy car, this is common sense if you want to be fast around a track.
I used 3300mah 25C Hyperion 6S lipos in a whole year on every terrain with no problem at all. That means 82,5A peak so how the hell would anyone need 450 amps?