I think in the Baltimore game it was the right call. Don't do anything too flashy; prevent turnovers by the offense. Try not to give up too much, to fast, on defense.
Even if the Ravens tied it with the 2-point conversion, I think the Bills win on a field goal in regulation. The Bills didn't excel, but neither did they make a big mistake that could have turned the game (like the Ravens did, with three turnovers).