What some people don't understand is that each person has a difference hand eye corodination, ligament movements, muscle memory and muscle strength.
One bat that may feel super extreme nice to an internaltion pro player may have an aweful pick and feel for the other person.
Support of a bat that suits your play style, and your capabilities does matter, but at a secondary level.
Playing with a Tendulkar's personal bat will not make you play like Teundulkar. That's the point !
I was a very young kid when I met Clive Lloyd during a match's lunch break, and I picked his bat.
It had 7 grips, yes 7 grips.
It felt awful to me but that's what suited Clive Lloyed. So out of curiousity, I asked him why? He showed me his hands - and they were HUGE !!
He said the regular handle's diameter is way too thin for my hands.
The point is, will his bat make me play like him? I didn't think so.