Firstly I don't know the guy or the song at all, but I listened to a part of the song, wich was so kindly posted by Dermot.
Your first question, yeah, it sure sounds like the original!

Second question, sure, your playing looks steady throughout. The things I've noticed though, when you go up the neck in 5th and 7th position (?), when moving between those two frets, all of a sudden you tend to speed it up halfway playing it, so that's less steady. When going back to 1st position the first maybe four times you landed there there too early like for instance on the 4th beat instead of the first beat of the next measure. Later, I think at least two times you landed there on time, so I guess it's just a matter of paying attention to it some more. Also when going up on the neck again, make sure you get there at the right time as well, wich you did most of the time, but here and there it was not.
Good work Matt, it looks like you're determined to get better and you are as well!

Ness