Most fighters in the game will out turn the Spitfire Mk XIV without difficulty. It rolls poorly, particularly at high speed. A significant number of fighters will out run it at AH combat altitudes.
The Spitfire Mk XIV most certainly cannot "do everything".
The only fighters that can out turn it are the ones that are a good 100mph slower. Just fight those in the vertical and you'll win.
Sure it's not the fastest on the deck, but it is one of the fastest up high. Can even out run a pony above 10K.
It does not have any roll problems bellow 400mph, above that it does not roll good, but most other airplanes can only fly straight at that speed, so spit14 can still out roll them. Ex: 109, P-38, zero, ect...