The BTX has the same magnetraction (MTX) as the MTX.
It also has the latest hot thing, the reverse camber banana rocker (BTX). It's the same tech as the highly (overly in the Angry Snowboarders opinion) hyped Skate Banana, which is from Gnu's sister company. From what I've read, that makes the BTX a little better in the powder AND the park than the MTX.
BTW, the Burton Hero also has the reverse camber rocker.