M43 vs Full Frame: Pick one

Here are two photos of the same subject, processed in raw to give the same 'feel'.

This isn't a trick, but there may be a sting.

One image is M43. Cropped but has more detail to give than shown here.

One image is Full Frame. Cropped but has more detail to give than shown here.

Which image is which? Can you tell? No EXIF for clues, this is eye test only.

Wanna play?

Image A

Image B

Feeling Lucky?

-Andy