Anton's probably had 2 reasonably good celebs.
Lesley Garrett and Laila Rouass.
He got them to 3rd and 4th respectively.
Not entirely sure how much further people were expecting them to go, against the P.R. machines of Chris/Hanna and Chris/Ola, and the superior dancers of Natasha, Ali and Ricky respectively.
Anton has never let anyone down if they've had talent, and has been able to take controversial, not wholly popular characters like Ann and Nancy further in the competition than they otherwise would have done, whilst making them household names at the same time.
Yes, his latin is inferior to most if not all of his fellow pros, but he's still a professional dancer, and was selected as such long before Strictly became about entertainment. He has dance ability, and is not just some foolish middle aged man doing dad dancing as everyone seems to insinuate. But oh well...