We have to stop worrying about individual players and weather or not they'll play, it's like my sons little league. When the opposing pitcher throws hard, is a proven winner etc, the kids know it and shake in their boots...the result is a defeatist attitude and they usually lose before the game begins.
Are they better with a healthy Gronk, yes. Bottom line is if they can't beat the Pats during the season wtf are they going to do in the playoffs against better teams with better players?
That being said, I hope Brady doesn't play.