If this answers some questions about your putting ... Fantastic! On the other hand, if it makes you have more questions than you had before, let me know and I'll help you figure out what method for putting is best suited for you.
I have my own style but I think based on body type and natural individual tendencies, all of these guys are right to some degree, and Dave Stockton is right that it is about more than your stroke. Making putts can be mostly about confidence and reading the putt correctly, rolling the ball should be treated more like a given with no reason for anxiety or concern.
Good luck and God Bless,