BB signs quality guys that fit what the Patriots have planned and he is a genius.

BC signs quality guys that fit what they are trying to do and han idiot idiot.

Both will have good choices and bad choices. Both do the best they can  with what is available. 

The success or failure is not determined before the season but during and at the end.

However both RS and Pats fans are spoiled and believe success is ONLY a WS or SB victory which is really not a valid determination of success since so much enters into the final result.