He has power and fought in a weak division. The talent coming through 140 right now are probably levels above him.
Whether you want to call it recency bias or being a prisoner of the moment, you are absolutely right. People get blinded by what just happened and ignore the not-too-distant past.
Go watch when he dominated Flanagan from minute 1 to 36, also how he broke down Mckenna who is a very tough guy to break down and doesn't usually take much punishment.