"Psychologically weak" is a bit harsh. They simply lack the most important element that Paul brings to the Clippers, which is veteran playoff leadership. The Grizzlies most veteran players--Randolph and Gay--aren't really take charge leaders and don't have a lot of big game playoff experience. And with Randolph still working his way back from injury and Gay having never actually played in the postseason before, they don't really have a tested and ready go-to player at the end of games who can manufacture points out of nothing. Their most playoff tested guy is Tony Allen, wh'oe always been a role player. Basically, they're young and lack experience.