Good points, but here's a big difference. Evans, Reed & Parrish are all between 5'9" and 5'11". Shorter WR's normally can't shake the double teams. How many games did Evans have last year in which he only caught 1 to 3 passes a game? IMO, Evans is a 1B receiver, not 1A. Our WR's are mainly deep threats, not red zone threats. Perfect example, when Peerless Price was traded to Atlanta to be the #1 WR, he failed because he was too short & couldn't shake the double teams.
Banking on a rookie WR to make an impact was a big gamble that didn't pay off last year. Getting a tall physical WR is exactly what we've been needing. I think Edwards numbers will improve with T.O. on the team. I think Evans will put up his best numbers to date and the rest of our WR's will have better numbers as well. Plus, this will open up the run game more as well. Teams will not be able to double cover both Evans & Owens.
Getting back to your point on the better QB. Let's see how well Romo & Cassell do this year. Cassell had Moss, Welker & a solid O-line, let's see how he does this year in KC. Romo will have Roy Williams, not T.O., let's see if he does better or worse.