"In Windows Live Photo Gallery, with the program window at least 1200 pixels wide"
That's quite a wide screen to expect someone to have in order to see all the available commands. I feel like this limit is even larger in more involved programs such as Word, Excel, etc where I've frequently run into the issue of having to click the "more" button, only not to find the command I'm looking for.
Also, counting clicks is a very weak UI rule to follow. Navigation time is key. The "clutter" description of the windows toolbar comes from the varying sizes of buttons that don't follow any regular order for the eye to follow, resulting in greater confusion and potentially slower responses.