Lennox took the fight lightly.....He figured that he would KO Vitaly with no problems...He had seen Wlad crumble and all the word at that time was Wlad was the more dangerous of the two...
Lennox had shades of Rahman 1 since round 2...He was tired and sloppy...Vitaly was ahead yes but by the time of the stoppage Vitaly was huffing and puffing himself....

Lewis had the experience to pull through the late rounds while tired....Wether he would have won or not I don't know but again Vitaly was not all that healthy by then...and Thats besides the cut.....

IMO if Lewis came into the fight in full readiness...In shape fighting like he had a dangerous guy in front of him he would have manhandled Vitaly....Not that I am making an excuse for Lennox conditioning in that fight...As HW Champion u should treat every fight seriously...

Point though as everyone else has said that cut was from a punch and the fight needed to be stopped.....

I don't know what you are thinking saying otherwise.......Don't know how much you know about the sport itself or how to tell if an injury is serious...But Vitaly was on the verge of losing his eye if it went much further....He wouldhave ended up blind for sure