Getting back to the point, the XIV is perked too high.
Imagine we had a Mk IX or VIII running on 25 boost.
They are nimbler, climb equally, same firepower, the Mk VIII has twice the range, speed is lower, but that's it. They vastly outperform the Mk IX we have at the lower alt bands. So, if those were to arrive, would you perk them too????
1943 aircraft......
So, in that relation the XIV is well overperked.