I just don't get how you can compare Griezmann to Coutinho.
The latter had a very impressive season and a half in Liverpool, and was a good player with the reds before that (but he wasn't the star of the team though, and it wasn't a very impressive Liverpool side either), but that was about it. He made it to the Ballon d'Or list only once, and he didn't score any point.
On the other hand, you have a player who's the offensive leader of a NT who won the world cup. 3rd best player of that said WC, best player of the 2016 Euro, twice on the Ballon d'Or podium. Those are just individual awards, and people might say they don't mean much. Coutinho was a second or third tier player for the most of it. Griezmann has been world class for years now. They're just not in the same league, honestly.