Some fonts can be the same size as others, but look bigger, due to the x-height. The x-height is literally the height of the small letter x in the font family. Look at the illustration at the top of the post to see how the x-height is measured. Different fonts have different x-heights, and as a result, some fonts look larger than others, even though they are the same font point size.

https://www.blog.theteamw.com/2011/03/26/100-things-you-should-know-about-people-91-size-matters-when-it-comes-to-fonts/