well i think its a matter of perception.
some people call anything minimal progressive, but i dont think it really goes that way.
minimal to me has more to do with the actual sounds themselves..that is...a hard base line very percussive and few if any melodies.
progressive to me is more about the song structure. the song progresses slowly adding elements one at a time. starting from practicaly nothing at all and working its way up to (sometimes) very hard and psychadelic.
minimal = spirallianz, wizzy niose, shiva chandra
progressive = m.o.s. , ticon, son kite
although here in new york progressive trance referes to crappy club trance.. i.e. the club twilo would say they play progressive trance on the flyer, but it was just crappy okenfeld and vandyke stuff.