I don't think so, I think a lot of the Bellator LHWs are just very underrated and Nemkov, Davis, Rumble, Anderson and Bader all have better wrestling than Jan which is his biggest weakness. I think overall he is a better fighter than some of them but they are difficult match ups. I also think Jan's win over Izzy is a bit overrated similar to GSP beating BJ the second time before BJ fought Nick Diaz and Jon Fitch. I can see Izzy losing to a lot of LHWs but I doubt he will fight at LHW again.
I think at the top at LHW divisions there is a lot of parity. I think the following fighters are all around the same level and can beat each other, Jan, Glover, Nemkov, Bader, Davis, Rumble, Anderson, Jiri, Reyes, Oezdemir, Rakic, Santos, Smith and Ankalaev.