Great question, why is the Destroyer Kléber going up in BR?

With the upcoming BR changes likely to happen soon, I figured I’d ask here since the post is locked.

What is the Kléber?

Well it’s the Ex Z6 Theodor Riedel a German built Type 1934A Zerstörer with a main cannon removed but the addition of six 40 mm/60 Mk. 3 autocannons in place of the German 3.7 cm/65 C/30 autocannons which were landed post war after the ship was sent to france from the brits.

The Closest ship is the Z15 Erich Steinbrinck,

Also a Type 1934A an bar the reconstructed superstructure & said AA changes, there’s absolutely no difference from the two ships yet the french vessel goes up in BR (although the German ship gets fourteen 3.7 cm barrels in seven mounts & they iirc don’t overheat).

Sooooo, what’s the go with this change? What was the point or reason, are french players just built different if the german version remains at the current BR.

Sidenote, rather bummed that I didn’t get around to asking on the original thread ntm maybe plea some suggestions that’ll not be taken on, yet here we’re.