Letting Manu play thru an injury and letting Duncan play thru an injury is night and day. If Manu goes down you lose spark, hustle, and energy. If Tim goes down you lose everything. No real post up threat, a huge advantage on the glass, no intimidation factor, etc etc etc etc. The list goes on for a mile. I wouldnt let him play back to back or let him have to chase around Amare. Like I said before tho, Pop knows what hes doing and I am no NBA coach.