Isn't Shuckle's base attack 10 or something? ..Or was that Blissey's? I'll agree with his other stats being laughable though - including HP.
Arceus does have the highest base stat total, in that area, he wins. In diversity, he also beats Smeargle and Mew in terms of usable options too. While Arceus isn't the most potent in a single catergory, he's the most potent in terms of unpredictability and variety.