What I think MG is trying to say is that Walker might not have been signed by the Ravens IF the Pats had made the decision to put Easley on the IR and promoted Walker earlier. Of course that's perfect 20-20 hindsight since there is no way the Pats could know that the Ravens were interested in Walker, so they could have thought they had more time to make the Easley decision.
What I don't understand is MG's comment of Tyms getting reps as a gunner. I hope he wasn't bemoaning that Walker wouldn't be available to do the jobs.
And why not Tyms? He has good size, speed, and length. He has experience getting off physical coverage, and he seems like a real "try hard" kid. Those are all excellent traits for a gunner.