Re: "No difference"
As others said, if it doesn't make any difference why are ISPs so against NN becoming policy? It is pretty clear they intend to eventually do things that NN would bar.
Two reasons I can see. It gives 'Edge' providers a free ride. This is why Google, Netflix, Apple etc lobbied so hard for this version of 'Neutrality'.. Which is of course non-neutral because they get special treatment. Then there's the ability to use QoS/CoS on the Internet to prioritise traffic based on need. So improving the ability to deliver dependable VoIP and live video, or other real-time apps.
That's the trickier one because it's where differentiated services has the potential to lead to differentiated pricing. Technically though, it needs doing, otherwise the Internet remains fundamentally best efforts.