Yup, it out climbs it. Bravo.
Care to check on speed, high speed handling, durability, stability as a gun platform, fuel endurance and so on?
The fact is that many mid-war fighters, Bf109G-2 for example, out perform the Spitfire Mk XIV when its WEP is gone. In addition, the Spitfire Mk XIV is a pure fighter, the reason Pyro said the P-47M is not perked, and even on WEP has a difficult time escaping from many free fighters. Where the Spitfire Mk XIV really shines is at high altitude, where no fights happen. It so happens the P-47M also shines up there, but is also good down low where the Spitfire Mk XIV is nothing but a gangbang magnet due to its perk status.