Doesn't make sense?? If WCAM's weren't allotted to AK Rajdhani, obviously a Diesel used to take up, despite if it was a electrified section.
Twin WDM-2's are powerful than a single WCAM n the acceleration plus braking is better.
Twins were needed for high speed run, as WCAM-1 wasn't meant for much high speed. Twin Diesels are enough for 110+ run too, if the section was permitted.