I think any decent MMA fighter will always win a street fight when you don't have variables like being really drunk or getting jumped by a group of guys who are also using weapons. Bringing up the Maiquel example was cherry-picking a worst case scenario to reinforce your point and in turn not really proving anything.
Here's a better one:
UFC mixed martial artist turns tables on robber who gets beat up, shot in leg with own gun
More extreme but still applicable:
Joseph Torrez, MMA Fighter, Fends Off 4 Attackers, Killing 1 During Home Invasion: Police
Going back to your original post that started this line of argument:
I think it's pointless to say MMA isn't "real fighting" because [multiple assailants/weapons/whatever]. Stacking the odds against someone as proof that he isn't a real fighter or can't win a real fight is bullshit. If it helps, limit it to a traditional fight (two individuals, no weapons/objects) and it's perfectly acceptable to say the MMA fighter will nearly always win.
More empty, false and unsubstantiated claims. Man, it must be fantastic to be dead for so long and still have so many convinced that you were an ungodly talent. I don't even have this mentality about the proven top fighters in the UFC and MMA.