system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 Why Muscle Mass ≠ Strength?

People with larger muscle mass lift less than people with smaller muscle mass at my gym, why? Steroids are not a factor. I know these people are clean.

Edit: In both cases perfect form is used.
gpt
Like you're 5;
You have two balloons: One is filled to be bigger but is filled with air. One is smaller but filled with water instead. Which one is going to have more impact when thrown?
Some people work out to make their muscles bigger, some work out to make them more dense.