Which one of these graphic cards are better for sandbox/mmorpg games?

[brown hash]

Which one of these graphic cards are better for mmorpg, open world, and sandbox games? or just better overall?

Radeon HD 7770 1GB vs GTX 650 1GB

and

Radeon HD 7850 2gb vs GTX 660 ti 3gb

And could all of these graphic cards run Skyrim, Tera, and all the other most graphic required mmorpgs?

Thanks!

 

[ASHISH65]

please post your whole specs and your max resolution

 

[shamsmu]

hd7770 is better than a gtx650(non ti)
gtx660 ti stomps hd7850.