S.O. 4050 Vautour IIB in the French tech tree is a sub-sonic bomber, with no capacity to carry guns, rockets, missiles, or any counter-measures.
Since its only armament is bombs, it is almost only capable of destroying bombs. However, it cannot arrive at bases before enemy fighters, and it has no way to protect itself against enemy fighters with similar or even lower BR. It cannot outrun, outclimb, or dogfight anyone. Its maneuverability doesn’t even allow it to escape from AIM-9B, not to mention AIM-9D or AIM-9E common around 9.0.
We may compare it to Yak-28B in the Soviet tech tree with the same battle rating:
Yak-28B is a supersonic jet, capable of accelerating and climbing faster. Besides bombs, the Yak-28B has a cannon (though it is not very useful due to low maneuverability). When bombing bases, Yak-28B can reach bases before enemy fighters, and can outclimb and then outrun every fighter in 9.0. It also has countermeasures and an acceptable roll rate to protect itself in the worst situation.
S.O. 4050 IIB’s performance is much more similar to B-57 in the USA tech tree, which has a 8.3 battle rating. B-57 is slightly slower, but sufficient to arrive at the base before most enemy fighters around its BR. It has 4 cannons, allowing it to attack AI ground targets. It also has acceptable maneuverability, at least able to escape from AIM-9B when speed is suitable.