BL was OK for a cha cha dancer, but Anthony could have easily beaten him.
As a rule cha cha dancers aren't really that good at fighting. They are better than the ballroom guys but not nearly as good as the Sasla and Tango guys.
BL was kind of like Yao Sing. He danced around and fought in the movies, but not too much else, other than beating up a few teenagers and a kung fu instructor (and we know how good those guys are at fighting).
He was petrified and in awe when he finally saw what a real Grandmaster like Gene Lebell could do.