Hardly a like for like comparison!
yes, its not really apples for apples (no pun intended)... perhaps this excerpt from Matthew Hayden's book illustrates the point better..
"...other companies had developed new, bigger bats with flat faces and far more power than my timid weapons.
This was when I was at the top of my game and felt that either Gray-Nic had to catch up with the times or I would have to go elsewhere. It was hard for both of us, because I never wanted to leave Gray-Nic (and never did, until the end of my Australian career). I had a meeting with the Gray-Nic powerbrokers and said, ‘You’ve been the greatest bat company ever, but you’re a conservative company, and unless you change you’re going to lose me and your foothold in the market. You’ll be blown away by the competition.’
To their credit, the company spent a lot of money upgrading its bats by acquiring machines which cut the bats with flat rather than curved faces. The edges of the bats became thicker. Bats had more wood and consequently more power, but were still easy to pick up. When I now pick up bats I used early in my career they seem so inferior."