I get what you mean on thet title, but imo, the original would be more "classic" per se, NOT because it was actually the classic one, but because it had original art that deviated from the in-game style, which is something that happened often during this and the overall early era of AB with trailers, promos and stuff. It wasn't until a bit later on (2012 I think) where Rovio really wanted everything more in model so they used either these or the toon designs which on their own were already much closer to these since than the previous non-established art styles used.
That aside this is a masterpiece. A great original idea, and while most of the characters here are straight from the actual sprites but Red, the rest of the work and the way it's put together doesn't give it any less merit. A freaking awesome AB piece and tribute in my opinion