once dak pgrens are near most vehicles and get their mg + the 200mp vet and health upgrade, they get really good
but it costs a lot to get to that stage
I've been having a lot more success with DAK pgrens in 1v1 when I build a 250 as like my 3rd or 4th unit to get the combined arms bonus. The bonus is ridiculous and the 250 isn't bad support in the early game too, and has a heal ability for when you don't have heals yet.