Not if you find a magic one with the ever so rare ability of sharpness, eh?
I have had characters from certain campaigns that makes his paladin look like a wuss, I have also played in campaigns when my highest stat was a 12. I have had fun in both and thats the point of the game, yes?
Bringing in characters from other games is always problematic, but your DM should be able to determine if it's alright for HIS game.
BTW people, all of these rules are just Guidelines...I haven't been in ONE game in my 28+ years of role-playing when everything was completely "By the book"