Maybe you could try something like this:
[state -2, VictoryQuote] ;Regular quotes
type = VictoryQuote
trigger1 = Enemy,Name != "CharHere"
value = 1~#
[state -2, VictoryQuote] ;Character Quote
type = VictoryQuote
trigger1 = Enemy,Name = "CharHere"
value = <Charcter specific quote>
Set a VictoryQuote sctrl for not only your character specific quotes, but also you normal quotes.
Have the normal quotes be randomly selected as long as p2 isn't the character you want to play the character specific win quote.