Most games are toss-ups beforehand and close outcomes afterwards. By design.
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OMG, the Jags came from 27 down to win!
Well....the 9-8 team beat the 10-7 team, but the 9-8 team had a better point diff, so it was basically a toss-up and wound up a 1-point game.
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WOW, the Dolphins really hung with the much better Bills! Well....the teams split their regular season games (both close) and it was their 3rd game, so they're familiar with each other. The better team won a difficult circumstance.
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The only blowout was SF over SEA, teams in the same division, one finishing 4 games over the other, having swept them in the regular season. Ho-hum.
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OMG the Giants upset the Vikes!! Everyone knew the Vikes' record was hollow. Both teams had virtually an equal point diff for the season, and the Giants were in the far-tougher division.
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This is all normalish stuff. Close games, radical reactions to mostly unremarkable things. It's the NFL.