Is Flying an Nitro RC helicopter more stable than an Electric one?

The shopkeeper said that the Nitro RC helicopter is more stable to fly than the Electric one. Is this true?

Stability is dependant on the air frame not the motor at present nitro engines can probably cope with a bigger air frame than electric motors and are probably cheaper as well, Piezo gyros and a properly set up computerised transmitter will do a lot for stability also. but a well designed airframe is the most important place to start.