Trophy CV?
Objectively speaking:
Without the WC, I'd definitely favour CR7's CV. More varied, versatile, superior in the CL and a Euro with Portugal means way more than a Copa which is a bit of a joke these days. Winning a Euro with Portugal for the first time is a far bigger achievement than winning a Copa with Argentina which is really easy honestly.
With the WC, it gets tricky. WC makes history and creates a permanent historic legacy. I'd give Messi the edge now that he has won the big one. He has the easy international trophies alongside the main one and 3 CLs and plenty of league titles albeit only in one league. Uber Eats league is a joke. Messi has won every trophy he has competed in.
Bringing a bit of nuance into the international trophy argument:
Portugal is simply not a country that can realistically think of winning the WC. Argentina is. They are a historic powerhouse with immense legacy. I think this current generation is the first time Portugal can actually dream of challenging for a WC. But by the time this team developed, Ronaldo was already old and finished. The WC thing is really unfair on CR7 coz he can't realistically win a WC with his country.
Where you can criticise CR7 is his dogshit record in WC KOs. He should have performed better even if he couldn't be expected to win a WC.
Messi vs Ronaldo:
League Football: Equal because Ronaldo has the variety, adaptability and versatility while Messi has consistent wins in one league. I'd give CR7 the slight edge because of 3 top leagues on his CV.
CL: CR7. No arguments.
International: Messi. No arguments. But tough luck CR7 for being Portuguese.