I never liked rankings and lists like this one. How can you compare an offensive tackle to a safety? it just doesn't make any sense. It's one thing if its ranking the players in terms of fantasy value, but there really is no scientific way of determining whether or not Chris Snee is a better 'football' player than a Darrelle Revis or a Donovan McNabb.
In Priscoe's positional rankings, he has Snee as the third best OG and Tuck as the fifth best DE.