Probably referring to those (like me) who wax nostalgic over a character with a low stat.
My mage was created w/ 2nd ed rules (I don't think she could have been a mage in 1st ed because of the dex, if memory serves), with a 4d6, drop low--I took one look at the numbers, and immediately saw the mage jump out of the stats I rolled.
She had STR--12, DEX--5, CON--16, INT--17, WIS--12, CHA--11
I like it when a character emerges that clearly from a set of numbers (though the stereotype would have been to put that 5 in STR instead).
I guess the question is whether you consider a character with a single low stat to be "underpowered" or not--and I guess I don't. To me, it wouldn't be quite as much fun to play a character with every stat 15+--that would be seriously overpowered, and just seems like everything would be less of a challenge, and would get boring quickly.