Poor quality guitar = this result?

Well it sounds like a modeler to me. Lacks in the treble/presence area. This is the type of tone I used to get when I was trying to dial out harsh digital sizzle.

That being said the tone is OK. Just sounds weird.
 
Sounds pretty good, although it could be better! To me it sounds a bit harsh/middy, and I think the guitars are a bit too loud in the mix.
 
Sorry man, but it definitely doesn't sound huge here. I'd go back and work on the individual elements again. Reference against a mix you're aiming for if you have trouble getting the sound you want.
 
Sorry man, but it definitely doesn't sound huge here. I'd go back and work on the individual elements again. Reference against a mix you're aiming for if you have trouble getting the sound you want.

I'm well aware there's no massiveness to be seen in this mix, I think it's largely due to the guitar not being the best for tracking. A considerable difference would be seen with a nicer instrument.