That is true but the fact is, a lot of them aren't given enough chances, or cut for other reasons.
See Chad Owens as an example, even Montreal cut him off, does it mean that he's scrap? He's obviously shorter than most NFL receivers but i don't see why Wes Welker can be successful NFL receiver and Owens can't, they are both short.
Also, what i was referring to was the amount of incomplete passes, obviously there are many reasons to that but i would assume that a team like Baltimore where everyone is elite talent and money wise can do a better job at passing than Ricky Ray and the Argos.