Ok lets talk tank busting and the JU-87Gs 3.7mm cannon And how it compares to the Soviet NS-37 cannon the IL-2 was armed with.
The German BK 3,7 cannon was belt fed so it had a relatively small ammo load out. I always thought the load out was 16 rounds per gun for an overall 32. Far less then the IL-2, which loads out at 50 per gun.
The NS-37 fired an 760 gram AP round made of hardened steel at 880 m/s, with a ROF of 250 rpm "500 rpm with 2 guns". It was rated to punch thru 50mm of any tanks armor at 200 m. Developing 294,000 joules of muzzle energy.
The BK 3,7 gun of the JU-87G fired a 405 gram tungsten core AP shell at 1,140 m/s with an ROF of 160 rpm "2 guns = 320 rpm", developing 263,000 joules of muzzle energy. I dont remember what this round was rated for penetration-wise but we can assume at least the same as the NS-37.
Strange that the Soviets used tungsten core for their ground anti-tank weapons but not for the NS-37. There were pro and con for the Germans using the smaller tungsten round at a higher velocity. While it would shoot flatter it wouldn't cause as much damage as the heavier 37mm rounds and tungsten was nothing special when it came to secondary burning, "unlike depleted uranium". On the Pro side the round surpassed the 250,000 joule limit of M/E widely believed to be the figure needed to penetrate any WW-ll tank.
So it shot a smaller tungsten round with a faster velocity, at a much slower ROF, a smaller load out. I would bet the JU-87 would be a fine stable platform and this would be an efficient tank killer in the game, as it was in actual use.
The Luftwaffe was very careful in awarding kills to their pilots. I believe Rudel killed all those tanks and think the "G" would be a fine addition to AH.