Nice dodge Epsilon 5.
The Spit has always been very average on K/D as well, yet it gets soundly damned while the P-51D gets off free. From my perspective, based on the aircraft I like to fly, the P-51 is far, far more annoying than the Spitfire could ever be.
Tour 29:
All planes have 420800 kills and have been killed 420800 times.
The Spitfire Mk IX has 29374 kills and has been killed 29811 times.
That is 7.084% of the kills in Tour 29. Far below 10%.