But it forced them to have to go for 2 at the end of game for no reason. If the Bears don't convert that 2pt conversion to make it 27-24, the game is effectively over. I could understand if the Bears were down 13 and going for two cut it to a 6 point game which means 2 FG to tie or a TD with EP to win. By making that decision, he forced the Bears to HAVE to convert the 2pt - which have (I just looked it up) a 31% success rate in the NFL this season.
The thing is that they only have to convert one of them. If they convert the first, they can win the game on the next TD.
31% is unusually low. It's normally just above 50%, which means that chances of succeeding on 1 of 2 (unless your offense sucks) are pretty good. To oversimplify it (because calculating probability of dependent events is a pain), in a season where the probability of succeeding is around 50%:
50% of the cases, you succeed on the first try, and you're ahead. One more TD wins you the game (in like 95% of cases or whatever your odds are of hitting an extra point).
In the remaining 50% of cases, you still succeed on 50% of cases, which takes it to OT, where you win in 50% of cases.
So in 50% of games, you win before OT. In 12.5% of cases, you win in OT. In 25% of cases, you lose in regulation. In 12.5% of cases, you lose in OT. If you kick 2 extra points, you reach OT in both cases, where you lose 50% of the time.
Bit of a back-of-the-napkin math, but concisely, being ahead is so much better than being tied and going into OT that it's worth risking losing outright.
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If the probability of success remains near 30%, that changes things. You only win in 30% of cases, lose in regulation in about 45% of cases, and still win or lose in OT in 12.5% of cases each.
Breakeven point is quite a bit lower than 50% success rate for 2-point conversion. It's a bit under 40%. At that point, you win in 40% of cases, lose in 36% of cases, and the rest goes to OT. 40% is incidentally where the Bears are on 2 point conversions this season (or maybe was before this game? website may not have updated)