Okay, proof is out - I'm retarded. Thanks to a new member, I found out that there's a way to pull a live ranking stats for your signature...
The code is this:
<a href="http://gpgnet.gaspowered.com/scstats/player/ByGametype.aspx?PlayerID=XXXXXX"><img src="http://gpgnet.gaspowered.com/signature/GPGNETUSERNAME.jpg"></a>
You'll need to go to GPGNet and lookup your PlayerID to make the link work. (Actually, you don't even need to link, its just a better way to share your stats).
The end result looks like this in your signature:
So, just go ahead and ignore that previous post about adding the link to your live stats. This way you can add your live stats right to SCS.