Ban

Does a ban on bf3 mean that i also get banned on the other games, still on the same origin?

it shouldn't... unless you've done some serious hacking like.. hacking origins website or something.. other than that you're just banned from playing online (i think only Punkbusters servers i think) and you should still be able to play singleplayer

Nope you're only banned from that game but if i were you and you also bought MOHW (Medal Of Honor Warfighter) In my opinion i would buy that game on a different account so that DICE / DANGER CLOSE doesn't that you hack on there also so you woult get banned. Hope i helped