User blog comment:AYET/Post-TS SHP member vs old pre-TS foe (Part 1)/@comment-4493594-20120716084224

OMG Power Level blog! Evacuate blog immediately! Just kidding.

Looking at it mathematically it comes down to this: So basically the question is whether Brook's two years of training were enough to catch up to Zoro's level before the training.
 * pre-ts Brook + two years of training = post-ts Brook
 * Zombie Ryuma + pre-ts Brook's shadow _<_ pre-ts Zoro
 * Zombie Ryuma + pre-ts Brook's shadow _?_ post-ts Brook
 * post-ts Brook _?_ pre-ts Zoro

If one assumes that none of the Straw Hats would have survived in the New World before the time-skip, one has to assume that even the weakest members are now "stronger" (i.e. they can fight better) than the strongest were two years ago.

If that was the case then post-ts Brook would definitely be able to beat Ryuma with his pre-ts shadow. Logically, though, Brook's shadow would have become stronger as well, so there is no way in hell Brook would ever be able to beat Zombie Ryuma.