You cant prove something is better than another (thats a qualitive statement), it doesnt say precisely what is being measured. So two people can argue about 'better' all day long.
You can prove something is faster (quantative), you can prove something is cheaper (quantative), you can prove something is more reliable. again quantative looking at (uptime). , or has more bandwidth. Cable comes out on top for most of these things except price. That is a very important metric for some people when it comes to deciding if something is better value. You can chose to ignore that metric and therefore win your argument
I still expect moderators to be able to see and understand another POV, and maybe even aspire to the definition of the word 'moderate'.