I'm not 100% sure but I'm pretty sure almost every ski company that has a rocker/early rise ski uses those terms interchangeably/ I don't really get the 4frnt definition of an early rise. especially since the early rise on the Line EP pros are not even close to the same thing.
^edges will crack regardless of the stamping pattern, an edge with a more aggressive stamping pattern (the t) will hold the edge within the base better once it has cracked. if you haven't cracked your armadas you're either really smooth, not aggressive enough, or haven't ridden them that much.