I think most people will look into a fighter''s past when evaluating them. It's really a coin flip the majority of time. As stated Wlad has been bounced around a few times then used his trainer to alter the way he approaches fights, which has led him to be unbeaten for a number of years. John Ruiz got sparked by David Tua in 19 seconds in the 90's, it took until around 2009/2010 before he was stopped again by David Haye.
Other factors can be taken into consideration, a fighter may have had some personal problems or injuries that had an effect on his performances. Others may be late bloomers or could have been on the wrong end of some dubious decisions.
Personally I think it's more when a fighter has been stopped in the past that we look back unless the fighter has showed a consistent trait that may have an influence in evaluating a current fight
Other factors can be taken into consideration, a fighter may have had some personal problems or injuries that had an effect on his performances. Others may be late bloomers or could have been on the wrong end of some dubious decisions.
Personally I think it's more when a fighter has been stopped in the past that we look back unless the fighter has showed a consistent trait that may have an influence in evaluating a current fight