They're 12th in offensive DVOA (11th in passing DVOA and 11th in rushing DVOA) and 25th in defensive DVOA (20th vs pass, 26th vs rush)
That's probably a better picture of who they are though I would expect they would exceed that with a healthy McCaffrey.
KC is 1st in offensive DVOA (1st in passing, 16th in rushing DVOA) and 13th in defensive DVOA (7th vs pass, 28th vs rush).
Advanced stat rankings:
Mahomes vs Bridgewater
YAR (yards above replacement, total value over a replacement level player)
1 vs 15
DYAR (YAR adjusted for opponents and situations)
1 vs 13
DVOA (defense-adjusted value over average, similar to DYAR but is value per play over a replacement level player vs total value)
1 vs 15
QBR (ESPN metric for QBs)
1 vs 15