A few days ago someone, I forgot who, and I were discussing arials and wood elves.

Wood elves have almost identical stats with arials, yet, their xp penalty is much higher, even though they're already neutral.

Why is that? Is it the high charisma? Shouldn't human bards in that case get some massive xp penalty too? Or maybe it's the amazing acute vision, which keeps you relatively safe from one class in the game? No, that couldn't be it, arials have fly, and I'd go with perma-fly over acute vision-type any day.

Vuln wise, vuln_water/lightning is just about as bad as iron, depending on what you fight of course. I guess as a defender, you'd rather have the arial vulns than iron, to give one example.

So why the extra 150 xp?