This thread is kind of silly.
No one could beat someone at the TK + Van level 2on1 on GOW, unless something extremely unusual happened (like a complete blank in a neighbor war and the other person playing really, really stupidly)
And sg is a great team player when he wants to be, at least as good as any. He just sometimes gets irritated with his partner and decides to play vindictive towards his ally. I doubt he would do that in a serious competition.