nah, he turned the stock price around which is why Wall Street and MSFT employees love him. Every single thing he's credited for "turning around" was launched under Ballmer. My reading of Ballmer from the outside (I'd left long before the recent transition years) is that he probably trusted his division heads too much. He figured they knew what they were doing and he just had to steer the giant ship gently in a gener…
Strikes me that these two things are the same failure. WinRT wasn't up to the task due to Windows 8 being poorly thought out, so Office couldn't use it.