First, Welcome to TFL....
and you're right about that guy being an idiot.
But when I read your post the way it was written, I thought you were saying, "It doesn't matter because the .40 short is a wimpy round".
A tip when quoting someone is to use the quote button. This helps to separate what your posting and what someone your quoting posted.
Trade it off on a .45 or 9 or 10mm...
If you ever have to use it for self defense, you'll be glad you did...
Your kind of an idiot. .40 cal is a 10mm and 9mm is .35 cal.
Again, Welcome and Hope this helps ya for the future.