Heh, I checked Chrome, IE9, and FF on my laptop and IE9 on there also gets 141+5. I guess Microsoft wasn't lying when they said it was the same browser as the desktop version. (I don't know why I never believed them.)
I guess it only makes a difference if your browser doesn't do something you need it to. This test will tell you. Also, this test should show MS that we really need to have other browsers available to us. IE9 is the worst browser on both mobile and desktop lists.