Agreed! 
The signal chain is a major part too. What good is it to have a high quality mic without being able to carry through? For the record, I do know that you can make a lower quality mic sound good, but the large diaphragm ones will capture more detail, which can be good or bad of course, depending on the quality of the singer, and to the average listening ear people will not even know what you are talking about.
I have also heard Jason sing through wireless SM58’s, and of course it still sounded like Jason, but there is a difference when one uses a large diaphragm like this one.
Again, I just wanted to know the mic he was using in the video. Thanks for the input.
Gary