Firstly, I got 4kbps download speed here so excuse me from YouTube videos.
I am not sure I understand what you are saying. I believe you CAN prove whether someone has actually been Divinely inspired or not. Or wait, no you CAN'T. Well ... its a bit more complex than that ... please restate what you are asking so I am sure what I am answering. Thanks.
How do you prove something is divine or divinely inspired?
If its subjective and can't be proven then how do you use that to judge other religions and their divinity?