Well, to be fair, if you strip an arrangement down and take off the elements that make it different from the source, very often you get something that is... well, not interesting and too conservative. That's probably why YoshiBlade added all of those cool, interesting elements on top of the arrangement.
There are mixes that change up the form of the track, but that's not a requirement for a track to be posted - it just can't be a straight cover with nothing added to it to make it really stand out as his own. As far as I can tell, it's not against site or submission policy to have a mix that stacks a whole lot of other elements over a relatively straight arrangement, as long as the source isn't straight sample'd from the game itself throughout (which isn't the case here). In this track, all of those extra elements, the gating of the theme, etc., add a lot of extra atmosphere. Changing the atmosphere of a track (or making it so much more intensely "that atmosphere", like in this track) does count as change, as far as following OCR standards is concerned, and adding elements on top of a straight source certainly counts as "adding a personal touch", as well.
This is a good example of a track that's extremely conservative that got posted (along with the judge decision that lead to it being YES'd) - very conservative, as far as arrangement goes, but it adds so much flavor in how it presents the material, in the little bits added on top, that it got a pretty solid pass from the J's. Following the form of a source isn't an issue as long as you do something to it to really make it your own. On that front, anyway, I think YoshiBlade would fare alright.