Ronaldo isn't even in the GOAT argument. He's a highly effective forward, but ultimately a limited player.
Before there was all of the ridiculous hype of the modern era, there was a player called Gerd Muller. He was a more prolific goalscorer than Ronaldo for both club and country, with a better goals per game record. Muller scored 653 goals in 707 appearances, plus 68 for Germany in 62 appearances. He also won the European Cup several times, and the European Championships and the World Cup. And he was decisive in the World Cup, scoring 10 goals in 1970, and the winning goal in the 1974 World Cup final, holding the all-time World Cup scoring record for 32 years. Bear in mind that Ronaldo hadn't scored in the World Cup before yesterday.
Yet I have never on one occasion ever heard anyone suggest that Gerd Muller is the greatest footballer of all-time because it was understood that he was nowhere near as good technically as Cruyff, who played in the same era. People actually understood that there is more to the game than putting the ball in the back of the net back then. And bear in mind that there was a much bigger gulf in goalscoring between Muller and Cruyff than there is between Messi and Ronaldo. In fact, Messi has outscored Ronaldo, particularly when operating as a forward, and still has a better goals per game ratio. Even though he plays as a number 10, and Ronaldo is a pure poacher. Messi basically plays Ozil's position, and also scores 45 goals per season.
And everyone knows that Messi is a better passer, dribbler, and free-kick taker than Ronaldo, has better control, creates more chances, gets more assists, contributes far more to the game, and scores more difficult goals, far more regularly. Even obsessive Ronaldo supporters on this thread have never challenged this because it is blatantly obvious.
That's why Messi has completely dominated Spanish football over the last decade, winning the player of the year numerous times, I think it will be nine once he wins it for the 2017-18 season, which is inevitable, whereas Ronaldo has won it once. That's why in The Guardian's review of the season, the following was said:
Ronaldo is a great player, but he will not go down as even close to being the greatest of all-time, and technically he is miles behind Messi, and always will be. That's why Messi is always bracketed with Maradona and Pele, whereas Ronaldo is compared to Messi.