This is all good and true. A lot of Windows users are used to having all their windows maximized when working with them but that is quite uncommon for Mac users. We like to multitask because our computers don't crash when we do.
*ducks* I'm kidding, please let's not start a flame on this topic here.
The habits of window use are true for the respective platforms I mentioned above however. I imagine my browser window is usually about 1000 pixels wide on a 1280 screen.