DO not understand why he does this, why doesnt he just get a normal sized bat?
I read something written by I think it was a GN bat maker about the psychological importance of a bigger bat, it gives the batsman more faith and confidence. You might "know" your bat weighs x amount and taps up so well and went well in the nets and "know" where the middle is etc but it's not the same subconscious feeling as looking down and seeing a big bloody lump of wood.
Seems frivolous to be smashing up a G1+++ bat every innings to those of us that dream of owning just one for such a tiny benefit, but at test level where money's no object, sports psychology is heavily employed, marginal gains add up to wins and Jimmy Anderson has his own personal hypnotist, why wouldn't you?