Its because Sony are a software company and Microsoft are a hardware company. You wouldn't expect Sony to be familiar with hardware logistics or anything like that.
Actually the likely cause is a screw up on Sony's end. They probably ordered the 45nm RSX and they short shipped the 65nm version, possibly due to some delay they had in the fab for getting volume of the 45nm up and running. They took a risk, hoping to lose less money by making fewer of the more expensive 65nm versions but they lost out.
Do you know what its like to live on the far side of Uranus?







