All USA 5.0 destroyers have 8 5-inch guns, while the USS Phelps only has 5. Even the USS Frank Knox has 6 at 4.7. The Frank Knox at 4.7 also has better aa coverage. I see no reason for the USS Phelps to be any higher than 4.7.
I’m pretty sure it’s a legacy BR like with other vessels but the USS Phelps DD-360 definitely should be a 4.7 only have five main guns due to being a heavily modernized Porter class & generally if the ship has more AA vs main cannons it’s usually lower in BR example Type 1934 Zerstörers iirc.
I would definitely like to see it get lowered due to being the Porter class I used the most also I really should’ve mentioned it in my BR change comment yet that goes nowhere every damn time I type it on those poxy posts and even then in that recent change nothing was moved that was mention by many players.
It should have remained at the same BR as the Cowell as it is functionally the same ship just with 2 less torpedoes and a tiny bit less speed.
It really has no reason to be at 5.0.
In one aspect it is better than the 6- and 8-gun DD’s - it’s mounts are all Dual Purpose - ie capable of elevating to 85 degrees against 35 degrees for those other ships.
Not sure that is worth any extra BR, but it is very useful for AA work - plus of course they have much better light AA than all the other 5.0’s.