The majority of client devices are 2x2 or even 1x1, so for most setups it won't make much of a difference, if any at all.
If you need a more advanced AP, you probably shouldn't be looking at all-in-one devices. Buy separate components, add as many APs as you need for proper coverage, rather than relying on a single device to cover everything.
If you need a more advanced AP, you probably shouldn't be looking at all-in-one devices. Buy separate components, add as many APs as you need for proper coverage, rather than relying on a single device to cover everything.