When you can't win your games in regulation no feeling sorry if your teams fails to have the pride to make a stop.
A few things on this...
Pride has nothing to do with it. It takes endurance to play an entire NFL season, all the more so in the playoffs. In this particular game, the Chiefs offense dominated time of possession. That meant that in their 19th game of the season (and 13th straight game), the Bills defense, without one of their best players, had been on the field for nearly 40 minutes. They had to have been gassed by the time it got to OT.
And don't confuse "Bills deserved a chance in OT" with "Bills deserved to win". Ultimately, it doesn't matter what happened in regulation, it's still a tie game.
Of course they should have stopped the Chiefs with 13 seconds left. No one is debating that. But they didn't. The Chiefs didn't stop the Bills with 1:02 remaining to win in regulation either. Neither team was stopping anything in the final minutes. Doesn't matter. The Chiefs got a FG, and now the game is tied. Even. 36-36. Both teams have had equal opportunity, both teams scored equal points. So the debate isn't about what should have happened in regulation, it's about how to give both teams an equal chance
in overtime.
I don't know what the answer is, but I do know that both teams should have to play both their offense and defense in overtime in the playoffs. If you're still saying "but defense..."... remember that we're talking about the playoffs, not some Week 2 showdown between the Bears and Giants. You can't say it's better for the sport, in a win-or-go-home game, for one offense and one defense to never take the field in overtime. There's simply no case that that's a fair way to decide the outcome of a tie game. It was an extremely predictable and extremely disappointing ending to an otherwise spectacular game - and that would have been the case
regardless of which team won the toss.
Result of the game is what it is, but if you want as fair of a contest as possible, the overtime rules need to be changed.