^^ As gewwang said, 4060s aren't really the appropriate standard of comparison. I would compare 4006 to MK2, 4011 to MK4, etc.
For what it's worth, omnis can make great audience recordings in the right circumstances. Perhaps also worth mentioning that the proximity effect in directional mics condition their users to expect less bass, so that even when they hear an omni recording from ideal circumstances, it sounds more bassy or muddy to them. Similarly, people that are used to omnis often think card recordings sound thin...