I just took a look at that one, and I really don't see what's so controversial about it.
Going from left to right you have
1. A character from a show no one gives a fuck about.
2. A character who is generally liked on /a/
3. A character who is loved by some, but hated by others, one of the only ones i'd say is controversial.
4. Another generally liked character, kind of overshadowed by other girls in the same series though.
5. Some character from a show no one has seen.
6. Nothing character who no one gives a fuck about.
7. One of the top 3 for these threads as far as harem inclusions.
8. Probably the most controversial, a character most people on /a/ hate.