Compare function : synchronize or not the zoom level

[oops66]

Hello,
It sould be interesting to have the possibility to synchronizing (or not) about the zoom level for each photos into the windows function Compare.
To also have the ability to compare some similar photos taken with differents pixels definitions in MP (from differents APN camera like 3MP - 6MP - 12MP)
Maybe a box to check near the function "use tab" in the bottom of this menu, to having the possibility to synchronize or not the zoom level for each photos?