No, an average person can do the bend just fine. The QB2 is one of the best investments I ever made in magic. This has been my reputation maker and go-to-effect for a few years now.
QB2 is easier to bend coins with than Superman is.
Unless you're abnormally weak you should have no problem at all with pennies and dimes. If you're having trouble with nickels and quarters just work your way up to them by bending pennies and dimes.