Yes i can when unequivocally the two highest rated players in football history i.e. Pele and Maradona won the World Cup. If Ronaldo and Messi want to be associated in that company then they should help their nations win the WC.
Winning the WC is still the highest achievement in football. Destroying the opposition in a tournament and scoring one of the greatest goals of all time ala Maradonna is still a bar Messi is yet to get anywhere near. Messi has had a better supporting cast over the years with Argentina then Maradonna had in 86 and 90.
Maybe its a generational thing, for people like me Maradonna is on a pedestal that no other player will reach. For the generation before that it was Pele. The generation before that Di Stefano, the generation before that Stanley Matthews. The generations long after Messi and Ronaldo have retired will have their greatest ever players, Messi, Ronaldo, Pele, Maradona, Di Stefano, Matthews will all be footnotes in history. People will move the debate onto who is better between the superstars of every generation as the decades pass and football evolves.