Update: it seems as if 2nd place on the leaderboard is lying; they're using collection too. First place RTA on original is 14:42! (Link to video)
Still a minute longer than WR RTA, but much faster than take 1. I know of some improvements I can still make, though... Credit to PieceOfSoap for the Peaks strat, but I had to change it a little to make it work in the original game. (Link to video)