Tyson doesn't have the academic credentials that Hawking or someone like Richard Feynman does. The power of Hawking and Feynman is that they both were at the top of their fields, but took the time to make the foundations of their science accessible to the common man. Tyson has done great things, but he's not quite there.
I thought Tyson's COSMOS was really well done but doesn't hit its stride until the 4th episode or so. I loved it almost as much as Sagan's COSMOS. The only "problem" with it was that the original was so good, and such a first of its kind, it's virtually impossible to top. I think Tyson's version was as good as it could be.
