Let's take a look

Comparing one game to another will contrast what makes the visual aspect of each game different from each other.

Compare FlyFF:



FLying mode



Ground mode

to FFXI:



to WoW:




We can see in terms of general coloring and aesthetic that WoW is very similar to FlyFF where FFXI has a more realistic feel to it. We also can see that FlyFF has an in game IM, while WoW and FFXI rely on /tell or /whisper.
Still FlyFF has a super cartoon/anime feel to it while WoW has a fantasy art style that would be found in tabletop player guides or monster manuals and such. FFXI relies on a more realistic feel however there are some aspects that set it apart from truly being photo real. Comparing the character look to one another FlyFF has a more "chibi" feel, where the head is somewhat disproportianate to the rest of the body. Wow has exaggerated muscles and an exaggerated body and it's ver unreal. FFXI on the otherhand tend to go for more realistic proportions for the more human characters and make the more non-human characters be proportiantate to itself.

These are just some of the things that make the games different from each other, yet women all play these games and find some aspect to them appealing.