All cars are fast, and I think all of us agree on it. The way I see it, a lot boils down to support, and what your faster friend drives, and also a lot on how easy or difficult a car can be.
I have won with rubber tires on carpet in modified with several cars, TC3, Xray T1, Pro4 and my current RDX.
The TC3 was the car that gave me my first win, three days after switching from a Losi XXX-S G+. The Losi was what made me a better driver, and it was easy both to drive and work on, so I learnt a lot. When I then switched, I knew what I wanted from a car, and I won straightaway with my TC3. The difference was that the TC3 was faster, but also a sharper and more tricky car on carpet, where the Losi more felt like a boat. Just floating steadily around. Later on I switched to an Xray, never really liked it, although it was easy to drive, and I won with that too....
I had a long break from racing, and came back when the Pro4 had been around 6 months. Was fast straightaway, and won with it, but on some tracks it was a handfull. Changed to my current Corally, and damn was it easy to drive, won with that too...
As of today, I don't race touring anymore, but I have been lucky enough to test a few other cars. Tamiya is winning a lot with rubber tires, simply because it is very easy to drive out of the box. And it seems to be quite the same with the HB Cyclone.
I think my Corally had the potensial to be faster several times, but it required more work. By doing that work, it was faster.
In my mind, that tells me that any car is good, it's the mind behind the setup that matters. And for beginners who want an easy car to drive, it might be easier if you can follow your local hotshots setup.
So I say, If you're experienced with setup, and know what you want, then choose a car you like. If your a beginner, choose what your experienced friend chooses