Jan is a journey man who was on the prelims during the Jones-DC-Gus-Rumble era.
He lost to Gus 2x during that time for a reason. He also lost to Corey and Phil Davis around that time too and got knocked out by Manuwa and Maretta as well.
Do you think Jan improved so much that he won the title at 41? Or did the divison decline so much after Jones, DC, Gus, Rumble, Lyoto and Rashad disappeared?
You think it's a coincidence that Jan never defended his belt once and that he lost it to Glover- a guy who also never defended his belt and got absolutely smoked by everyone I listed above: Jones, Gus, Rumble, Phil and Corey.
You be the judge.
Jan is a solid, experienced fighter but he's closer to being a journey man than to being an all time great and the only reason why he's getting more respect than he deserves is because Poatan fanboys must inflate the value of his wins to justify their ridiculous euphoria.