yes but for IQ larger pixels are the best
Actually not necessarily...
You have to strike a balance between small pixels (resolution) and larg(er) pixels - dynamic range.
Larger pixels can equal loss of detail and more moire, smaller pixels can equal more detail and less moire IF the lenses can cope with increased resolution.
This is why it is very important to have good quality optics along with a high resolution sensor.
Of course if A2 is going to be max enlargement then 22MP is likely to be more than adequate....
...then we can of course discuss different 'properties' of each sensor.. speed/ISO range/ etc etc. It is not just about Megapixels.
Best,
David