he is also 5'10...
In a division where the norm is 6'1 -6'3
You're absolutely right. But I don't take the listed heights of fighters too seriously.
I'm 5'11" and I met Fedor in Calgary at an HCF show where Alex was fighting. He's listed as 6' and I was taller than him.
If he's over 5'10" I'd be amazed.
Point being a think a lot of the heights listed might be slightly exaggerated. Carwin for example is listed as 6'5" iirc