Heck, I guess I'm just repeating same words so many others have already spoken in this thread, but here you go: as much as I also like M&B, it doesn't compare
as an RPG anywhere near true classic series like Ultima, Fallout, Elder Scrolls, Baldur's Gate, Dungeon Master, Captive, Gothic, Magic Candle, Might & Magic, Lands of Lore and so forth. Not to mention respectable one-shots like Planescape: Torment, Darklands, Arcanum and Arx Fatalis.
Strictly as an RPG I would personally rate M&B somewhere between ranks 20-30 (It's still rather high, mind you). For Pete's sake, the game isn't even ready yet! As mighty and awesome it eventually will be, we just can't know it for sure at the moment.
Therefore HOTU's RPG ranking list results are a little bit absurd...