Ok, so evennif we go just with that. It is still unique in its speed and maneuverability. You will struggle to find similar"Medium" bombers for different countries.
It doesn’t matter if different medium bombers have different characteristics (speed/ maneuverability) and that all medium bombers must fit the same mold. The point is that medium bombers are a playable class
Not every Fighter plane is the same
The Attack Plane class groups various plane types together, dive bombers, light bombers, ground attack, and medium bombers
What youre saying is absolutely true. But its also true that Medium bombers would suck to play.