Outside of Heath, Dickerson was the worst Mr. Olympia ever. Compared to Dickerson, Phildo is weeks old smegma.
First, what the heck does the 1982 Olympia have to do with Phil Heath?
Secondly, of the 13 men who have held the title, only 3 have won it just once. Since Heath isn't in that category, that would disqualify him from being the "worst Mr. Olympia ever".
By the time Heath turns 43 (the age by which Dickerson finally won the big one), he may indeed have 10 Sandows to his credit.