I saw this yesterday when it was new, but don't know enough about the various pumps to have responded. The only thing I'd like to add is that Hayward Superpumps have some verbage in the lit. to the effect that "these should only be used with 'permenent pools' (ie. ones that don't get taken down, though I think the caution is also about AG pools).
As I said, I don't fully know, perhaps one of our 'pump experts' will expand on why they can't be used.