he's domestic/Euro level tough. not world level tough.
his former titleholder status may mislead some into believing he was ever a bonafide world class guy. he positioned himself into a shot at that 140 strap by beating very unspectacular opposition in 6 and 8 round fights and then outgrafted a definition paper titlist (the extremely mediocre Souleymane M'baye) to win it.
Kotelnik beat him up and stopped him. while Kotelnik was an excellent technician, ask yourself how many world class fighters he was ever close to stopping.
Broner could eat up ten of Gavin Rees on the same night and still have energy to go a few more rounds (no homo).