The difference is the jury is out on David. He could easily turn out to be a great HW within a years time. I think we can all pretty much figure out what we're looking at with Kingpin...a lifetime FNF-er against the likes of Jason "Big Six" Estrada, Travis Walker and Taurus Sykes.
Um KINGPIN was not knocked down against Seldon, or anybody. If you watch the fight on gofightlive.tv you will see Kevin trip over Seldon's foot, yet DID NOT GO DOWN.
Let him fight Arreola if Arreola does not get to fight Vlad. Arreola by knockout. Chambers would beat him, Thompson, Austin, etc.