Before this goes any further down this path, I'll just say that it was a 7/10 is a very conservative rating for visibility on the K4. IMO, it's more like 5. Anyway, maybe make one axis on this ultimate plane comparison graph dealing with performance, based off of Dtango's original graph. i.e. the Tempest in the upper right would be a 19/20, while the P-40B in the bottom left would be closer to 2 or 3/20. Then the other axis would deal with the business end of the planes. This would, however, weigh the armament equally with performance, so any suggestions on how to alter that to make it a little more balanced?