Hazed I'm talking about another game, Combat Mission. Sorry for the confusion. I don't use GVs in AH and don't expect to ever do so unless there are some big changes.
Here is what I mean in terms of Combat Mission and probably real life too:
Puma is nice if you might encounter tanks.
But if there are no tanks then the 234/1 is better because you can really chew up grunts with that auto-cannon, and it can defeat armor of most armored cars and APCs. And even if there are tanks, it's not wise to go toe-to-toe with them in a Puma because you are usually outgunned and outarmored, so you will keep it hidden. And Puma doesn't have the HE ammo load or rate of fire to really chew up troops, and the gun is not quite big enough to bring down buildings easily. So Puma is not very useful except as an ambush vehicle against other AFVs, or as an emergency anti-tank weapon. Whereas the 234/1 (with better HE load and rate of fire) can be used as an assault vehicle against troops and can still take on light armor. 234/3 does not have the rate of fire or turret traverse of the 234/1 so it's not as useful at short range. But the 75 mm gun is excellent against buildings, houses, bunkers, and concentrations of troops, as long as your keep back far enough that the lack or turret traverse is not a problem.
But that's Combat Mission...
In AH with ridiculously long engagement ranges, strange armor model, lack of ground cover, and general absence of a realistic ground combat, I'm sure the biggest gun will rule, so Puma or /3 would probably be "better". But for fighting with terrain features, cover, realistic armor models, and lots of grunts, I want a 234/1.
As far as my duty against axis equipment... I have done a long campaign first to get the Fw 190F-8 and then to get the rockets and other ground attack options. I started a thread asking for Ju 88C and other Ju 88 variants, as well as asking for the Ki-102 and Ki-44 repeatedly. Not just requests, but small articles with photos I scanned. I'm not obsessed with the equipment of any one particular country in WWII. I'm interested in all of them and I have spent money and time and travelled hundreds of miles to do research on WWII aircraft from USA, Germany, Japan, and Britain. I've got something like 100 books on WWII airplanes and all the major combatants. If I'm biased against anybody it's the minor combatants like Italy and France, because I don't have much knowledge or many books on their aircraft.