WR numbers don't add up

Receiver A has 57 catches for 794 yards and eight touchdowns in 24 starts for the Dallas Cowboys.

Receiver B has 65 catches for 940 yards and eight touchdowns in 21 starts for the Cowboys.

Guess which guy is virtually guaranteed a starting job? Yep, Receiver A, aka Roy Williams.

I'm curious how exactly the Cowboys explain to Receiver B, Patrick Crayton, that he doesn't deserve a chance to compete for a starting job. Unless it's about the dollars, it doesn't make any sense.