Berzin said:Both Froome and Contador had days during Andalucia where one dropped the other.
Froome was dropped in stage four, and Contador in stage five.
If they were doping full-on they would not have had such performances.
This is true, but as elsewhere noted, the system is designed to only/mainly ensnare "full-on" dopers. The "legs race" is tilted toward parity--which is not an even playing field.