What is so unusual about getting knocked the fuck out by Weidman on the feet? Was it because Anderson was clowning? Isn't that what Anderson always does when he fights though?
It's unusual because fighters usually try to defend themselves from strikes during a fight. Clowning lets one's defense down and makes one more susceptible to getting hit. While clowning may have some effect of psyching an opponent out and thus messing up his offense, it's still an inherently dangerous game to put one's hands down instead of defending from strikes. Playing around with hands down is an inherently dangerous game - it doesn't matter if it worked in the past for Anderson, it's still
inherently dangerous. It's like a sprinter who has always beat his opponents because he purposefully lagged in the beginning to get in the other racer's head, then he catches up and sprints by him to win the race because the other racer was thrown off. Only this time, the sprinter lagged too long and lost the race because he couldn't catch up. It doesn't matter that such a tactic may have worked in the past - if the object of a race is to cross the finish line before your opponent, lagging intentionally at the beginning (even if the purpose is to psych out the opponent) is inherently dangerous. Like the runner in that analogy, Anderson played an inherently dangerous game by keeping his hands down - one that fundamentally would make him more susceptible to losing (getting hurt and finished by strikes) - and lost because of it. Weidman's victory was legitimate, but Anderson in his stupidity offered it to him on a silver platter, and Anderson is partly to blame for his embarrassing defeat.
Weidman's 2 victories over Anderson are both legitimate - but they are both undeniably unusual. If Anderson came out focused, razor-sharp, and technical, and still got TKO'd by Weidman, wouldn't Weidman's victory have been even more impressive or at least clear-cut? To the extent that that is so, Weidman's current victories over Anderson are unusual.
Also, Weidman's wins are literally unusual in the sense that very, very few fights end by knocking out someone who was clowning with his hands down. Statistically, they are not normal, but rather very unusual. If you can't at least admit that, you're not being logical.