Pele just says that Puskas is one of the best players ever, thing that may be true given all that is said about him (I can't tell 'cause I've never seen him).
Zidane doesn't say Ronaldo is the best ever. He was asked who the best player he played with was and he said Ronaldo. To me it's pretty clear that he meant that Ronaldo was "the number one" on that or in any case the number one of his generation, he never talked about all-time.
In the video about Maradona Zidane is almost worshiping him and admitting that Maradona could do things that he never could.
But either way I agree, youtube videos mean , tbh. Only thing that matters is: Messi > anyother player I have seen in my lifetime