To the best of my understanding, you can have two algorithms (I assume that is what you mean by "process"?) that produce the same result, with the only difference(s) being the amount of resources it needs (for example, RAM) and the time it takes.

Anyways, since you don't seem to be testing for which one is faster on the exact same task (identical scene/setup, identical/close-as-possible quality) , I guess my point doesn't really matter...