The zeke is not zooming, nor climbing. It is a slow moving, fast rotating gun turret more than anything else.
The reason that they are so dangerous in a zoom climb is that they can get their nose up at any speed and keep it there for a very long time (while gaining very little altitude, it is almost a hover maneuver). While you use your superior climb/zoom to get higher than him, he just points his guns up, having plenty of control left to aim at 80 mph indicated and send those 20mm zooming after you - and you can't out zoom a bullet.
To sum it up, they are dangerous because they can aim upwards, not zoom or climb, same goes for the hurry, N1k and spit 5. If they try to rope you instead, you will notice that you usually zoom right up their behind.