I've never actually heard this theme before. Lovely piece.
I did listen to the original first and then your cover.
Well.. I wish I could play piano like that and write piano arrangements like that but I'm lost in the piano world. I really liked that about your track, seriously. Piano arrangement was top notch. I think the pace of the track was great, you didn't try to hurry the song along and that really shows skill in someone's ability to tell a story with music. Something I must improve on myself and that I admire in your case.
Bring bass tone into the song a little, it sounds a little dry in comparison to the other instruments, IMO. But you wanna know the really great news? I'm listening to this a second time, because I WANT to. I don't usually do that with others work too often I'd like to hear more piano from you in the future.
The variety of instruments is lovely and you have I suppose a Gilmour-esque guitar feel to the lead parts which is nice. I do think that when the first heavy guitar chuggs come in that the rhythm tone is a little muddy and could benefits from a dryer tone with more presence and a little less gain. Take out the gain and quad track the guitars and you'll get a massive beefy rhythm guitar. Also when you built up the drums and then everything stopped, I think it fell kinda flat. I was all ready for a huge BOOM! Just my opinion.
I hope that wasn't too negative. I only say the things I say with love because I really enjoyed the track. This is by no means an attack on your technical or writing ability. It's more of a production thing for me.
I really liked it! ^.^