I'm not sure if anything you say is objective as your opinions are generally really closely tied to your tastes (more so than other people).
but I don't totally disagree with you, I think Hatsukoi Cider has a really good PV, particularly among this group of options.
if it is genuinely being voted on the bottom, I'm gonna go ahead and say its mainly because of the outfits. just imagine that same PV with Kanashiki Heaven outfits.. people would be calling it best PV of the year.
and it is neither the best PV of the year nor is it the worst of this bunch.. it's just the outfits (and song) leave such a large impression that everything doesn't seem to factor as much.
edit: forgot choreography. every PV that doesn't have choreography seems to be less memorable.. we've just been conditioned to "need" choreography from H!P PV's, though granted the bare-bones nature of their PV styles does tend to require choreography to liven it up.