When I started the game up this beta week (been in 2 before) I accidentally put myself in AI match, figured what the hell finish it out. It was such a face roll that I got 47 kills 0 deaths and we pinned the ai in the starter box.
I have friends that only play hots vrs ai and when I play with them it has to be against ai but at least there is a modicum of challenge there, you are most likely going to win it is just a matter of getting from A to Z, in Overwatch vs ai you go straight to Z, gg.