When one talks about EZ mode, they are talking about EZ mode for most players. If most player flew their planes to their planes strengths and fought with them in there 'element' I think the faster planes would generally fall under EZ mode, but that is not the case, most players almost instinctively go for angles. Maybe a better graph would compare optimal corner speeds or optimal sustained turn speeds. Also plane 'handling', although hard to quantify makes a huge difference. For example a k4 or tempest when it is slow requires much more throttle attention than say a spit 5 due to the torque.
