More than any other level of football, the NFL is all about matchups. The coach’s job, and specifically that of the play caller, is primarily to find the best matchups to exploit.
In the case of the matchup in Arrowhead, the Kansas City Chiefs do not have many weaknesses. Sure, their linebackers and corners leave something to be desired, but their front four and safeties stack up favorably with any team in the league. With that said, those matchups don’t matter a whole lot if the Raiders’ defense can’t slow down Patrick Mahomes and the Chiefs’ explosive offense at least a bit.