Which browser compatibility data is more accurate - caniuse.com or developer.mozilla.org?

Question

I am confused about caniuse.com and developer.mozilla.org data. For example, caniuse.com reports that atob function is supported in Chrome Android since 90 version, but developer.mozilla.org reports that since 18 version.

Is this incorrect data on caniuse.com or am I misunderstanding something?

Answer 1

They are collaborating in some ways

https://hacks.mozilla.org/2019/09/caniuse-and-mdn-compat-data-collaboration/