Yes, of course they matter. You know what else matters? The laser he threw to Dennis Pitta in the endzone and the perfect pass right over the defenders hands to Boldin in the endzone. I never said the 50 yard bombs didn't matter, I said that's just one of the many things he did well in the post season. If those bombs were the only thing he was doing, then his average yards per completion would be much higher.
The only reason he's able to throw those bombs is because of how well he's been working the sideline and middle of the field, forcing the DBs to respect those throws as well. For years his signature throw has been the deep out along the sideline, which is as far from a "punt" as you can get.
Yes, the highlights of this post season has been a deep bomb to Jacoby Jones for a TD in the super bowl, and a deep bomb to Jacoby in the Denver game. You need to watch more than just the highlights to really appreciate how well the guy played this post season.
You do realize that in the NE game they completely took away the deep ball and he still outplayed Brady right? His longest pass was 26 yards, and his 3 touchdowns were 5, 3, and 11 yard passes.