I don't know how you can say that? "Scored more goals" is hardly a perfect way of assessing talent.
To be honest, from what I've seen of him - which admittedly is not much - I don't know what all the hype is about. He looks good yes, but he's only had one decent season and most of his opponents have been meh. Personally I haven't seen anything spectacular from him that might tell me he's the next Messi or Ronaldo. Maybe I've just missed it?
So yes, worth signing as he is young and shows great promise, but their valuation is bonkers and would be a ludicrous risk I am sure we would not take. If we can get him for say £80m plus add-ons then maybe.
He seems to be more like a Ronaldo (athletic, does everything very well) rather than a Messi (capable of jaw dropping moments of skill).