How dare you, Night elves are the finest women outside of gnome and goblin women (Shortstacks, yo), and Tyrande is the true Waifu!
And, if you are of the 'manlier' persuasion, Tyrande's husbando is kinda hot too, in a 'bara' kind of way. In which case, Threesome for me!
Forsaken women are... pretty much mostly decrepit and I daresay about 50% of them are falling apart. Not my kinda thing, admittedly. It'd be like trying to have sexual relations with Kreia from Kotor II, which is eww.
Not that I wouldn't bang Sylvanas if I had the opportunity... but man is she an outlier for her kind. She's probably the only forsaken that I would actually want to bang, and afterwards I would probably want to find some stronk stuff to wash the smell off of my dick, what with her being undead and all.
Of course, in order to try to get to Sylvanas, one would have to go through Nathanos. That is going to be a raid in and of itself. Nathanos also isn't all that sexy, in my opinion, so no Threesomes for me.
Meanwhile, I would totally be down for banging pretty much most Night elves that I have seen In-game.
In this way, when it comes to sexual preference (This is F95zone, afterall) the Night elves are inherently superior to Sylvanas and her not-so-sexy sidekick. Fite me!