Strange stoppage, but yeah, Banks didn't necessarily merit being allowed past the third round .... I mean, in a NON-TITLE fight you don't necessarily need to be given so many chances, if it looks like you are outclassed and you're not landing back. He was thoroughly outclassed in the 3rd round.
Could of been stopped in the third when Banks was in trouble on the ropes, However the stoppage in the fourth was terrible.