vitali, his LL fight was entertaining, I can't think of vlad having a fight as good. Either he dominates or gets beat up, but the brewster fight wasn't too bad
Wladimir. Vitali throws quite a lot of punches but his lack of one-punch KO power makes him less exciting. Wladimir's mediocre/poor chin combined with his power brings a bit more intrigue, even if he is a "safety-first" fighter. Just IMO.
Bit of an easy choice! Vitali has an exciting all action, never take a breather, handsdown style, whereas Wlad is a technical boxer, who likes to keep his distance and counter punch!
I wouldn'tsay Vlad has a glass chin, taking punches from 220+ pound ought to knock anyone the **** out even if you are 6'6.
The same guy who knocked David Tua down. Even if Tua was 38 then, still a feat. (Though I heard he also claimed he stepped on Tua his feet by accident)
Obviously Vitali, an exciting fighter who takes risks and attacks Wlad can be in some snooze fests, because he has to protect the whiskers, and cannot take the same risks and risk getting countered...like against the semi professional golfer.