It's really not too bad, it just takes more time to get used to than you'd like. I have especially big hands so it was pretty tough but I just stuck with it. I started with Ermac and practiced for 3-4 hours at a time just doing basic combos and getting the feel for the small controls. As far as Lao's spin, it's much more difficult obviously because of the small ass pad... and it seems you need to input it noticeably quicker than other ports due to the sped up gameplay on the DS.