My bet would be that GM's will analyze moves with the betterment of the team in mind. The questions will be: Does our team OVERALL get better or worse with this personnel change?
I don't know alot about the Seahawks. I know that Tatupu was a 2nd round pick, is undersized, has alot of ability, and had a solid year last year. As far as the depth behind him, I can't speak to this either. I don't know the team like I know the Pats. I know Branch is a STUD. Proven. Period. Would the addition of Deion and a replacement for Tatupu make their team worse? It would depend on Tatupu's replacement. They bring on a guy like Sam Cowart or another veteran to fill the hole this year and use their #1 pick on a LB. Or perhaps there is a young player showing lots of promise on their team that I don't know about.
Bottom line: The decision process the Pats are going through and the variables being considered is going nothing like the speculation on this board is predicting. We are all taking shots in the dark to stay busy until we hear the deal. Until then, keep posting.
If I were a betting man, I say the Pats sign him. Branch, that is.