Sounds like you're reading too much into it IMO. Raleigh's haki is probably just that strong that he can perform a vast amount of seemingly impossible tasks.

It seems to me that there's the defensive haki (used by CP9), the offensive haki (different degrees of strength; Shanks, Raleigh, Boa and Luffy have the strongest) and the pre-cognitive type (used by the sister and the priests in the Skypia(sp?) arc).

Just a guess, of course. I really have no idea.