No Sir, AMD is better than Intel at Folding.
The Tinker and Amber Cores are not current cores and are all but phased out due to performance. Gromacs is the currently used Core, which favors Intel. There is still not much known about how the new Barcelona family of chips will fold, but comparing processors that are currently out, the intel core 2 duo processors are much faster.
If you want to see some of the performance differences check out the stats by processor on this site.