If I were to choose which were more better, I think I would choose Twitter.
Twitter is just more fun and addicting then Facebook and easier to use in my opinion. I don't know how to really explain it, but another factor that's bad on Facebook's case is it just gets boring overtime. I really only have a Facebook so when I get older I don't forget my school friends and whatnot.
So in my opinion, I think Twitter is better then Facebook.