Destiny will be better... however...

I THINK ILL PLAY DEFIANCE WHILE I WAIT A YEAR FOR DESTINY.

By the time Destiny comes out, Defiance will have had its run, and will only feature core/used-game players that still have some odd goal left. Ask not which is better, but more off, "What will Defiance have left for me in a year?"

Your only answer should be (obv not talking to haters on this one) "Well, a DLC just came out, so, perhaps ill jump on Defiance to complete that... After ive finished Destiny."... Yup, thats about it.

Its how i am/was with Borderlands 2. "Ok, farmed my gear out. Max lvld. had fun slaughtering Dexidious... whats left?... Oh look, Defiance looks cool..." Now Defiance is getting extremely repetitive, just in time for Tiny Tina's Assault on Dragon Keep! In 1 year, hopefully Trion will be releasing the 5th DLC, just as Destiny becomes stale (which EVERY GAME does get at some point).