Actually i watched the replay and its a 10 count.
Start counting at mark 2:51 (dont bother about youtube's time just count as a normal one)
Bruce was the best ref around, Unlike the one who refd in Darchinyan/Gorrez bout which totally sux.
The bell wasn't noticed because of every1 was shouting so hard.
Also Viloria has his shorts a bit high but not that high, and those are real low blows he took.