Some people (like myself) don't like the 20.1. Just my opinion.

The PAs are overrated, yes. The A3000db does about 1800-2000 depending. I've had 2 so far that were about 1800, but it really has varied by amp from what I've seen. I've had one in the past that was almost the rated RMS. 2200W@1. Generally they average range from 1800-2000@1 and a tiny bit more at .5. It's nice that they are .5 stable.
Edit: This is why I bench test the ones I sell.