Spots 1 and 2 rate high at least by your results. You think it's a edge?
I'd say this is true, if we assume that player values tend to lie on something resembling a bell curve, but only in the very long run. In any given season, the dropoffs might favor other picks.
Of course, there's also the inherent (tiny) edge of picking early in drafts with an odd number of rounds.
Basically, though, this effect is negligible and essentially theoretical. A single injury or difference in the way you rank players is enough to make this a moot point.