Pierce is no longer the great offensive player he was. He is a good one though. So this makes him no worse than Allen - and Pierce still creates value with the frequency of getting to the line. Doc keeps miles off of him on offense, which is good in the long term. However, Pierce is a great perimeter defender, best on the team, and has evolved since 2007. He has always been a gifted one, but now the effort is there. He is a huge part of the defensive identity of this team. Nobody is untradeable - but choosing between Allen and Pierce, there is no comparison.