Using "warped" in a sense that the rotor is of uniform thickness and merely bent may slightly cause a pulsing feel.
If the rotor is "warped" in the sense of varying thickness as it goes around has no choice but to cause a bad pulsing.
The floating caliper may follow a bent rotor ok , but still isn't good. A caliper that runs on a rotor with much variance of thickness must push and pull fluid.