Pop is newer and the furnishings inside the room are a bit nicer. More of a wooden, roomier dresser and the tv is a 27" vs. a 20" that Movies has. The bed at Pop are on these platform things, so you can't store luggage underneath them. That is the one thing about Pop that drives me nuts. The value rooms are small and its nice to have that under bed storage area the All Star rooms have.
Pop doesn't share buses but its a huge resort and the All Stars are right next to each other. To me, its not a biggie that the All Stars share.
Pop's food court has an indoor bar and an outdoor bar, Movies has only an outdoor bar.
Movies is the only All Star that has not gotten its refurb yet. I love Movies, love the icons but have opted to stay at Music our next value stay and really hope the Movies rooms get an update soon. They aren't ratty at all but now that I have stayed at Pop and seen the picutres of the Music refurbbed rooms, I will probably not stay at Movies until it gets refurbed.