Not really. I find them both equally attractive. People just like different things. I wouldn't be mad if Val won a poll, for example. That just means more people want her. Should they not be allowed to vote for their wifey? Just like Priscilla align more with your preference. The same goes with Queen being attractive to others. It just so happens that they outnumber you by a lot.
Now, I can't speak for others, but incest isn't why Seraphina is attractive to me. Well, not the main reason. The main reason is she's a blonde, busty elf with a thicc ass. Something which is personally hot as fuck. She's also not easy to take down. While she's a big pervert and flirty, it's hard to get her to crack. But when you get her mask to slip some, you can tell there's a horny demoness waiting to ravage you under it. It's just getting her to that point is a journey.
Priscilla on the other hand, I like for completely different reasons. She more mature looking and openly voluptuous in design. Which is hot in it's own way. She's essentially the secret mistress killing your father and wanting to fuck you type of hot. So I wouldn't say she's more attractive or less, personally.
With all of that said. It's not like other women aren't getting dwarfed. What about Arcadia? It's crime that this sexy ass redhead milf doesn't have a single scene when she's that hot. She's been in the game longer than a few characters and yet she has nothing. And while yes, she's not with the MC in the west, I would've loved a go with her over almost everyone there. And that's because she aligns with my own preference over majority of them.