No. This information was generated by someone from the community Discord
It's based on data extracted from swep1rcr.exe (so this is fact, not observation), also based on research by the OpenSWE1R project
which relies on help by volunteers. Contact us through our gitter.im channel
if you want to help.
The data shows that Sebulba has the highest top speed, however, at 0.38 anti-skid he'll feel sluggish and his acceleration is pathetic. For AI races you are better off driving a racer with high acceleration and high-anti-skid, such as Neva Kee.
Even for getting best-lap times you want Ben Quadinaros (similar to Sebulba), who has a lower top speed than Sebulba, but a much higher turbo boost.
Most people will play Sebulba because he's a popular character, or the weapon / fire attack.
A lot of people also love playing as Anakin, and I've often heard claims that he's the best racer. However, the data linked above clearly contradicts that.
It doesn't makes sense that Sebulba's pod is faster when in the movie Anakin's pod is the fastest one ever to date.