Well, on the 80A version, I would spec it out at closer to 160A and that's with a derating for 200*F. So, 270A is not that far off. So, it looks like they are rating these things on the conservative side (or maybe realistically) similar to what Castle does.
Since I don't know the FET part # on the 150A model, and assuming the same derating ratio as on the 80A model, those numbers look about right. Maybe a tad on the high end on the burst figure, but maybe the FETs in the 150A simply have a better burst figure since they are different (being 6s rated). Any way someone could post the FET part # for the 150A model?
Someday, I'll get one of the 150A models to play with as well. Don't know what I could put it in since it is SOOO big. Heck, I'll throw a couple axles on it and use the ESC
as the chassis.