Agree with the posters above, the game has evolved. Even dudes who seem like they're swinging wildly (Chandler, Gaethje) are way more technical in the stand-up than most of the opponents BJ faced on his prime (Joe Daddy, Sherk, Diego, Kenny, etc). Size also matters - today's LW and WW for the most part are bigger than in the 2000s, and overall more well-rounded.