They actually scaled up surprisingly good if you ask me.
OoT: 7.6/32=0.23
TP: 20*0,23=4.75, Tp is going to end up at that!
MK64: 9.6/32=0.3
MK:DD: 21*0.3=6.3. Only 0.3 off!
This lines up great! (Note: I'm not saying all games will act like this)
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS