There is no difference between a 2 or a 4 stroke in regards to what deadsticks the most. The honest answer is that if you engine is properly tuned neither engine will be prone to deadstick. The two main causes of a deadstick condition is improper tuning and running out of fuel. The fuel part is easy, just use a timer and land before you run out of fuel. Your instructor should teach you to properly tune your engine while you are training.

Ken