One player is likable, charming, a joy to be around. He roleplays his character superbly. Everybody likes him. The GM likes him.
Another player is a charisma black hole. He will not speak in-character. Fellow players merely tolerate him. He sucks a lot of the fun and energy out of the room, just by being there.
Should the charismatic player have an advantage in in-game task resolution, especially at character-interaction stuff?
Well, I was going to vote "only in limited circumstances, eg when they deliver a speech superbly," but I read your post, and it sounds like the second guy is someone I wouldn't play with. If he's sucking fun out of the room, he's probably doing stuff we don't enjoy (extreme rules lawyering, drawing people out of immersion, trying to break the system to "win" the game, etc.). If he's doing that, I'll get rid of him. If he's still around for someone reason, I'll probably favor the guy that isn't an extreme rules lawyer, doesn't draw people out of immersion, and doesn't try to break the system to "win" the game.
However, being charismatic out-of-game won't get me to break the internal consistency of the game by giving out bonuses or being more lenient. As always, play what you like
Yes, in the same way that a player who is a better tactical thinker has an advantage and a player who better understands the game rules has an advantage.
I do agree with this. If a player is more intelligent, he'll know what to do a lot more often than a lot of average-intelligence players. Same for players with some common sense. I have a player who is pretty intelligent, but what would probably be classified as a low wisdom (no emotional intelligence, bad common sense, etc.). In one game (not D&D or my game), he saw some sort of liquid eating into the concrete outside of a building. His first reaction? "I want to touch it."
He's actually pretty intelligent, but it times like those that we give him flak for. A more intelligent (or wise) player, even with a stupid character, wouldn't have asked to do that. It's just the cards you're dealt. As always, play what you like
