you are missing the point. For single boxing, yes, any combo of tank healer and dps is viable for heroics. Boxing is different, as we all know. You have to pick your team to play to your strengths as a boxer, and lessen your weaknesses. I doubt there's anyone boxing a bear tank, rogue, hunter, DPS DK, with a holy pally healing... If so, i'm impressed.

I haven't seen what ToC looks like, but unless there's a crazy gimmick, i wouldnt discount it being boxable just yet. Once we get geared enough to attempt it, Hopefully someone will be able to fraps it.