Does air rides better than Spring?

[MAC]

I think we know the air suspension moves the Hummer up and down a little to give it more ground clearance when needed, plus the weak but potentially useful air inflation hose. My question is what else does it do? I see semi trucks on the freeway say “AIR RIDE” on the sides. I assume that means the cargo rides on air, which must mean it is better with less bounce than riding on spring. Sounds nice and certainly more impressive. How about the Hummer air suspension? Is it supposed to ride better because it is air suspension?