My best guess, is that you simply read the wrong line. Without having a Mac handy at the moment, I would presume the keyboard shortcut you used was a force shutdown, which may very well be one above or below force quit in the list... So you may have simply jumped from one line to the other.
I wanted to force quit an application on my first gen MacBook running Mac OS X 10.6.3, so I looked up the short cut key command from the Apple menu. I saw that it was option-command-power-button. I pressed these keys, and my Mac instantly displayed a black screen. After about five seconds, my Mac made the usual sounds of starting up. I booted up, and nothing seemed to have been affected, so I double checked Console, which didn't help much. I looked up the short cut key command for force quit online. The Internet says its option-command-esc. I tried the command, and up popped the force quit prompt. So why is the short cut key command WRONG on my Apple menu?? Thanks!