Ok GoldDum,
I'll entertain your comment. I won't deny that it's an issue but I won't support a comment that it's unknown to WGT. They are well aware of it and have made several responses in the forums that they're constantly working to improve it. Obviously the more people that join, the more maintenance required. This is a necessary evil.
In response to your other gaming experiences, WoW and Everquest do not run inside your browser. More inward, the images (the biggest overhead) on your high end games are locally stored on your machine. The images from WGT are sent across the internet, rendered in your browser, and displayed out to you. This is why you'll see "Transferring data from psj-gs02.wgt.com" constantly updating during game play. It is an apples to oranges comparison at best.
As far as Google Analytics, the same concept applies. Transferring images, let me be more technical here....transferring byte streams across the internet is resource intense. To replicate it, get a free FTP site and download a free FTP client. Upload a large file and watch your CPU usage. Hopefully you don't blame the 80% usage on the FTP application.
Edit: I was a little off topic in the previous paragraph. What I meant to add about Google Analytics is that it's interfering with an already intense process further contributing to the lag.
In closing, if you're not fighting with the bottleneck, you're at the mercy of the routing tables. There is and will always be something in the way of perfection outside of your control.
Adam