Should Hector Lombard cut to 170? Or could he, even if he wanted to?

I saw someone comment on a thread on another forum that "Lombard is a welterweight with LHW muscle", and it got me thinking. The fights he's lost in...

Source: http://www.mmaforum.com/general-mma-discussion/120754-should-hector-lombard-cut-170-could-he-even-if-he-wanted.html

Wagnney Fabiano Kevin Kimbo Slice Ferguson Paulo Filho Mirko Cro Cop Filipović Luiz Buscapé Firmino