Indeed. Better and faster are not always the same thing. Remembering that we're talking about races, the ability to run real fast against sub-par competition and with rabbits taking you through most of the race does not make one a better racer than the ability to beat the best in the world in a championship setting.
Not that the ability to run fast shouldn't be considered when talking about best but it's not the only factor. I'd argue that it's not even the most significant factor.