Of course you would, with your Celts preference how could you not?
This part of the discussion started with someone making the assertion the Sox were in the best position to win a title, obviously I disagree. The Sox are 18 games into a 162 game season while the B's are not just in the playoffs but in command of the series most of us thought would be their biggest obstacle in getting to the finals. The Celts have been impressive but in light of the injuries it is unrealistic to think they are closer to to winning a championship than the Bruins.
If we are going to morph the conversation to which team is better coached then the conversation is over before it starts. Only one of the coaches in town has not just brought his team to the promised land but done it repeatedly and is generally considered in the argument for best ever. If you'd rather go with overall long term outlook it's tempting to go with what Ainge has built since there is so much talent and potential not to mention Stevens obviously knows what he is about. Anyone countering with the B's could make a very similar argument. Sweeney has done an incredible job remaking that team and not just Cassidy but his entire staff are the goods. As for this incarnation of the Sox with no cap and so much checkbook induced change baseball only exists in the now, long term is out the window in hardball.
All that said, in spite of appearances the best overall outlook resides in Foxboro for as long as Belichick does, nothing breeds success like success. He and his team are the only ones that have done it year in and year out. The proven pedigree is there and I would not bet against him doing it again even with an entirely different cast.