Arguing the other way, I am not sure I have a problem with a TL14 armored hull stopping a TL7-8 weapon completely.
By TL 14, armored ships are using Meson Guns and all those other low tech weapons are only used by civilians and pirates...
I would expect a TL14+ ship to have very few missile/laser turrets. They will have PA weapons and most or all of the larger, ship killing, weapons will be Meson Guns.
Turret weapons are not going to kill a warship at higher TLs.