Don't really understand your post, sry.
There're 4 votes against aldi_s (XdreaM, Chef-Killer, T3RR0R15T, Rocky), 4 votes against sphouse (Beppo^^, Skill ,XdreaM , HaRmonY) and 4 votes against siegecastle (Beppo^^, XdreaM, HaRmonY, Rocky).
Now to your example. Beppo^^, XdreaM and HaRmonY vote against both of this maps. Why should Rocky's vote count more than Skill's one? For me it's 4:4.
So we (admins) have to decide what map is more worse in our opinion. That's what I wrote before (your 1. quote).