Final answer:
Allylic cations are more stable than other cations because of resonance stabilization.
Step-by-step explanation:
The stability of an allylic cation can be compared to the stability of other cations by considering their molecular structures and electronic characteristics. Allylic cations are stabilized by resonance, which involves the delocalization of positive charge over adjacent carbon atoms. This resonance stabilization increases the stability of allylic cations compared to other cations that lack this delocalization. Thus, allylic cations are more stable than other cations that do not have resonance stabilization.