The Ravens did not play the Chiefs or Bills this season. Mahomes has a record of 3-1 against the Ravens. I do not think the Raven's can beat the Chiefs, Chief's Offense is getting back on track to it's capability but had a couple stumbles last night, the defense wasn't great against the run last night until 2nd half but had some clutch moments. I believe the best AFC game was just played (KC vs Buffalo).
As for the 49ers vs Lions, tough call. I'll be happy watching the Chief's beat either team