Arriving in US by land Vs by plane

[sunny0101]

Hi, I am planning to use my advance parole to visit my home country, Canada while waiting for my green card. I am thinking of driving to Canada vs taking a plane this time.
I heard that there are reports of more scrutiny and (more/tougher) questions by Land US Customs and Border Protection (CBP) officials than if one would arrive by air. Would that be the case?
Any hint/experience would be appreciated.
Thank you