A few questions - are Japan, Taiwan or Socorro in the Islands category or attached to their nearest continents?
Anyways, here are the species lists without the fauna from those places we'll see how we get along.
RZSS:
Black faced kangaroo
Crowned lemur
Lesser hedgehog tenrec
New Guinea ground cuscus
Northern koala
Red-bellied lemur
Ring-tailed lemur
Swamp wallaby
Antarctic Gentoo penguin
Common barn owl
Hamerkop
King penguin
Madagascar teal
Meller's duck
Northern rockhopper penguin
Pied imperial pigeon
Rainbow lorikeet
Southern cassowary
Swift parrot
Victoria crowned pigeon
White-naped pheasant pigeon
Yellow-crested cockatoo
Central bearded dragon
Common blue-tongued skink
Australian green tree frog
Aspinall foundation:
Black and white ruffed lemur
Black lemur
Crowned lemur
Red-bellied lemur
Eastern grey bamboo lemur
Fossa
Greater bamboo lemur
Ring-tailed lemur
Green tree python
White-lipped tree frog
So that is 25-8 to RZSS overall, but 8-8 in mammals, 14-0 in birds, 2-1 in reptiles and 1-1 in Amphibians. Interesting
Anyways, thanks to my own visits to Edinburgh and HWP and a quick glance through the media galleries along with
@britishzoofan's coverage I think I'm voting 2-1 to RZSS with a bonus point to RZSS due to the far superior species list (especially in terms of non-mammals) and good -> excellent enclosures. However, the AF has a seemingly excellent species coverage of the Madagascan area with 7 species of lemur and fossa as their only mammals, so that earns them a point. Does that explanation qualify me for a bonus point?