I feel you, but I dont think breaking off two runs for 10 yards each is really an indication that Bell is certifiably better than CEH at this point. KC has all the info they need to make decisions like this and they still chose to put in CEH regardless of his inefficiency. Anyone can be good on two runs, if the stars align I could have a 10 ypc in the NFL on 2 carries too*, but that doesnt change the fact that no NFL coach would put me in over CEH.
* it would take a lot of stars