Go searching around the crackberry home page. You will see Kevin posted a video at some major bb event that unveiled the 9930. He takes his 9780 right next to the 9930 and does a browser comparison on wifi side by side. The OS7 browser rendered the full non mobile crackberry site in a few seconds (looked to be under 10 seconds), while his 9780 on OS6 took forever.
Posted from my CrackBerry at wapforums.crackberry.com