Never mind the fact that the PV-2 saw almost no service in WW2, eh?
PV-1 saw plenty, but was underpowered and overloaded. PV-2 had the same engines but a much increased wingspan to help carry the extreme amount of fuel onboard. They also tacked on another 1000lbs of ord (from 3k to 4k). Only problem is this wrinkled the wings on takeoff.
After a long retesting and redesigning phase, that included shortening the wings a bit (still didn't fix it) the majority of PV-2s were shipped out after late 1944 and were used stateside as trainers.
They would have been slower than the PV-1 due to the much larger wing, but would have had longer range because the fuel was increased thinking they could add more weight without problems.
If you want a PV-1 that's one thing. They soldiered on despite being rather outdated in the PTO. It was slower than an A-20G, had less fixed guns, and less payload. However only about 69 PV-2s (according to Wikipedia's count, some other webpages don't specify) were actually delivered of all types. Some were -D models but overall they were an advanced trainer.
P.S. Some comments about a few -2Ds used as ground attack on (I think it was) the Aleutian islands, but after 1943 the air forces of the world began to rethink their different categories of planes, and dedicated attackers weren't needed when fighter-bombers were just as good and could also kill enemy planes. By late 1944/early 1945 P-47s, P-51s, and P-38s ruled the PTO and had most of the jabo tasks covered.
