IMO fui is very very lucky. White obviously believed he was bitten, and probably was but I always thought it would be hard for him to be found guilty because through his jersey there would have been no teeth marks, just a bruise.
The video shows that exact part of Whites arm around Fuis mouth, but without actually seeing him open his mouth and chomp then there was no real evidence.
Seems as when it comes down to one mans word against another they are not to keen to tarnish someones reputation without damning video evidence.