P47 strafe rocket still doesn't do much with a high ammo cost. It still a very random ability that sometimes do nothing.
Balance problem:
p47
- 240 ammo cost
- Poor accuracy
- Rockets can collide/miss often
- Can be countered by OKW for free
- Have to deal with well-armored units
Stuka
- 200 ammo cost
- Rarely miss
- Can't collide with terrain
- Hard to counter (have to build dedicated AA)
- Have to deal with normally poor armored units
There are some others issues like Airborne doctrine is very centered in p47 and in doctrines that have stuka they are just a support ability but I will consider just the facts above as a balance issue.
If you want to see for yourself, there are two videos comparing them in the first reply of this topic.