I've been watching this sport for 40+ years now, so I know a little. So its time for predictions (which I'll redo next week after I get all the Wild card games wrong).
AFC:
Wild Card:
Titans over Pats - Titans offense is just clicking and they can put 30 on the Pats D. They might have the most balanced offense in the league so Bill B. isn't really going to be able to take out say their best player because they got a bunch of guys on offense. Pats could win though, because the Titan's D is gutter trash and might be able to keep their offense off the field by running for 200 yards. Its just the Pats just seem worn out these days, they have traditionally played their best football in Nov-Dec and that's not the case this year.
Houston over Bills - both teams are bit schitzo, in which you never know which is going to show up. Just have Houston because they are at home and have DeShaun.
Divisional
Ravens over Titans - I actually think the Titans match up well w/ them, especially if they can turn it into a shootout. Its just the Ravens are rested and at home. Plus they'll run all over them.
Chiefs over Houston - Chiefs have quietly been playing great football as of recent. It doesn't seem like last year where they need to score 38 to get a W. Houston plays them tough tho and its a close game.
Championship
Chiefs over Ravens - the Chiefs came close last year, this year I think they go over the hump. I think the one team the Ravens would love to avoid is them. The Raven's D is secretly not that great (granted they aren't horrible either its just Lamar keeps them off the field) and the chiefs just went up and down the field on them in the regular season matchup.
NFC
Wild Card
Seattle over Philly - Philly is injured everywhere (seattle too but less so) and their D is kinda terrible. Still its a close game because Seattle lets everybody hang around.
Saints over Vikings - Cook is banged up, its in NO and the Saints are really really good indoors. Vikings have talent and it wouldn't be megahugeupset if they win. just can't see it.
Divisional
Saints over GB - Just having cold weather won't stop the saints. GB needs a blizzard and wind. If not Thomas and Kamara combine for 250.
49ers over Seattle - just thought the 49ers were a better team even when Seattle beat them.
Championship
49ers over Saints - if the 49ers are a 5 seed no way I pick them to go to the SB. Its just the field will be terrible and the 49ers have more players who are better in sloppy conditions.
Super Bowl
Chiefs over 49ers - close game, its just Chiefs were deep and close in last year's playoffs and as I said before are just know how to win even when Mahomes isn't throwing for 5TDs/game this year.