At first, I didn't know what you all were talking about, thinking to myself --
how could anyone not see the difference between those two superscripts? And the difference isn't shape. But then I remembered that thanks to
My custom Mobileread stylesheet for the Stylish plugin for Firefox, I see MobileRead in a different font from everyone else. In the font I'm using, the difference couldn't be clearer. He's my screen cap of cm's latest post:
So obviously this is very font-dependent.
The difference is also very noticeable in the IMPACT font:
98.6º and 98.6°