Well, what does tell ?
Since Roddick was supposed to be a Sampras on steroids, it doesn't look really good for Pete :-)
By the way, the post you replied to was merely trolling.
Given his age, Sampras is quite likely to have started with wood tool.
I've been playing with the green & black painted wood Dunlop Mac once had, iirc.
And I was born near day-for-day ten years before Federer (August 1971).
Not having if not compete with, say at least play often with, wood racket is merely concerning players born after 1990.
I wonder how most would deal with such smaller heads, appart from Fed who has been the smallest head in the pro tour until very lately (with known results no longer after the switch)