I think, and it has been stated. Good paint jobs are not a new concept and didn't just start happening in recent years because the guns got better. I have seen some awesome show winning paint jobs from an old siphon feed gun - back then that is all we had. Technology has to progress otherwise these companies would be out of business from lack of sales. There are always those who want the latest and greatest..
Experience, skill, technique, and product knowledge of what you're spraying will beat out the best of guns. As a great gun over a good gun wont make someone w/o the aforementioned a better painter.