Photo size 25 MP

[deus_ex_yue]

Hi all,
While shooting comparison pics between Mi Note 10 and Mi 10 pro I found that

Mi note 10 pro save pics @ 27 MP (108 MP pixel binned)
while
Mi 10 pro save pics @ 25 MP (100 MP pixel binned)

It seems that photos have te same FoW, not evident picture crop.
Someone knows why?

Thanks