You can airbrush most paints. Even paints that say you can airbrush them, are rarely "airbrush ready". For example Vallejo Model Air, which is made for airbrushing, still may require some thinner or flow improver or retarder.
Airbrush ready paints are usually much thinner out of the bottle. So if you find something thick, it is NOT made for an airbrush specifically.
I really don't like Testors Acryl paints (or Testors paints in general). I find them to be either thick and gloppy, or thin, watery, and translucent. I've used some to hand brush 1/72 planes and they were frustrating at best. RAF Sky and RAF Earth painted fairly well when thinned. US Neutral Grey was like murky water. US Dark Green, Dark Earth etc were also watery.
I think you could do better with Vallejo Model Color paints. They hand paint beautifully. You do need a primer but beyond that, they are great. There is a bit of a learning curve to get used to them as they are more like a concentrate. The more you thin them they better they perform.