Equal in both power and strength; Android 17 had an advantage because of his unlimited energy and speed.
Do the androids have unlimited energy?
Most of the androids are said to have unlimited energy and eternal life. Due to their inorganic nature, they, or at least the ones created by Dr. Gero, except for Cell, also have no detectable aura unlike Saiyans, Humans, and others, so they cannot be directly tracked using Scouters or Ki Sense.
Does Android 17 get tired?
10 They Possess Limitless Energy Despite Being Mostly Human
17 and 18 can still get winded if they take too much damage, but they don’t really get tired from physical exertion in the same way other organic beings do.
Why do Android 17 and 18 hate each other?
Later at some point when they were about 17 y/o Dr Maki Gero kidnapped them and transformed them into androids. 17 and 18 held a HUGE GRUDGE against him. They did not want that. So they took revenge on him.