An epic piece to be sure, but how much work actually went into it? It's pretty easy to find MIDI files online and slap some VSTs or soundfonts on and call it a remake. Having heard the original, I think that version is much better personally. Your piano version is fine though, very good-sounding actually. If that's actually you playing the song, then I have nothing but respect to you. Just judging by the actual song here though, it sounds absolutely fantastic!