Against each other? It'd be an interesting game, contary to popular belief except for slaughter (I think) you don't need to kill a demigod once to win. Obviously the best team will still win, those who stack aoe's or seperate them as needed, bluffing, ect. It's not so simple a game as you'd think. In fact, I think it would be a game where you'd really tell who the skilled players are.

Oh, and I'm assuming there's two of each on each team.

As much as I love Sedna I think the QoT team would win in this scenerio if both teams were decent. It would come down to actual creep pushing because nobody would die, QoT's instantly kill massive armies of creeps with ground spikes.

If the Sedna team recognized this fast and pulled items then started killing they could win.

Would be a long and boring game regardless.