no, per 48 minute stats are viable. they're obviously not going to actually sustain the rate for 48 minutes, but it's a telling stat for what the player brings to the table. a player who gets 5 rebounds in 10 minutes per game should be considered a more valuable a rebounder than one that gets 5 rebounds in 20 mpg, and per 48 stats convey that.
darko is a functional rebounder and an alright shot blocker, but he's dreadful at everything else. and curry is fat.