Does this look like a Staffy? - Page 1

 We got Charlie about a year ago when he was 3 months old.  He was a rescue listed as a boxer-pit mix.  Now that he has essentially matured we're still trying to figure out what he is.  He looks most like a Staffy of some sort to me, but he's not quite as thick as most Staffies I've seen.  He has a bit of an underbite, which could be from some boxer in him?  He is certainly the size of a Staffy, but when most people see him they say "Oh, what a cute boxer." But, I really would like to get the opinions of some people that know these breeds well.  He's about 55 pounds.

Would love your comments!