Gear question

Going to get new gears for my car. Ive decided on 4.56 or 4.57. The 4.56 gear has 9 pinion teeth and 41 ring gear teeth. the 4.57 gear has 7 pinion and 32 ring gear. Would the 4.57s be stronger because the teeth would thicker. Or would the 4.56 spread contact out to more teeth. Just thinking. Maybe it doesn't matter.