It would really depend on what you're doing. The dewalt has a different throw, or elipse, than a lot of the air random orbitals. BTW, the dewalt is random orbital, it has no forced rotation. There is a makita, the BO6040 that has a switch that lets you go from dual action *having forced rotation and an elipse* to random orbital, but the dewalt doesn't have that feature.
You'll get much better control with the air tool because it's lighter and because of where you hold it, more over the working surface but if you're not doing fine work, that's not to say you're not doing GOOD work, just not work that requires tight tolerance, you might be fine.
I have an Airvantage random orbital sander with the 3/32nds throw I use for colorsanding that I really like. That can't be replaced by the Dewalt because the throw on the Dewalt is much bigger and colorsanding that way requiers more control than the Dewalt can get you.