rotors dont warp. if you feel vibration during braking, you either did not bed the pads properly or there is excessive runout you will feel the vibration.
Wobble is usually excessive runout, not "warped" rotors.
Runout can be caused by unevenly torqued lugs, a poor hub/rotor interface, runout in the hub or wheel bearing flange, etc
If you want another source beyond Stoptech and a 40-years-famous race engineer how bout the editor of Brake and Front End magazine?
Brake Tech Feature: 8 Myths that Could Be Holding You Back from Performing the Best Brake Job: Brake and Front End
article goes on to explain those in more depth