Humm... What do you need exactly ? What is "style matching" for you ?

Ok, I understand your point.

The "Style" tab is displaying all the styles applied by css and html code to the element, not style changed by javascript. That is why you don't see runtimestyle.

To have the current style of the element at the time you look at it, you can use "Comp. style" tab. This one is returning the real applied style on the element, including possible changes done by javascript.