Well that newer "click and hold" exposé feature will partition off all the minimized windows on the bottom part of the screen when all the windows show up... That's one way to figure it out - there's also just right clicking on that icon to see ALL the available windows (some of which may or may not be minimized... so I could see your confusion there)... All in all I still like it...
There's no confusion, I just prefer the way microsoft implemented it back in 2001 with Windows XP with taskbar grouping, albeit without a preview of the window.