Who's the world's best player - Lionel Messi or Cristiano Ronaldo?It's a debate that's rumbled on for almost a decade now and yet football fans remain completely divided over who is truly top dog.Juventus and Italy legend Gianluigi Buffon has faced Messi and Ronaldo on numerous occasions down the years and was asked to pick between the two last week.But his answer couldn't have been more diplomatic as he described Messi as the more complete player but Ronaldo as a "killer" in front of goal."Messi is more complete, because he starts deeper, has more technical quality and a vision of the game that is worthy more of a trequartista than a finisher," said the veteran goalkeeper."Cristiano Ronaldo, perhaps because he is a little older, has become a killer in the penalty area."Compared to how he was before, Ronaldo preserves his energy more, so he no longer goes out to the flank for a nutmeg or trick-shot, but with one ball into the box he can create a goal."Doesn't get much more impartial than that. Buffon also said the pair are "completely different players" and in that respect he's absolutely right.So let's narrow down the debate to: who's the better goalscorer out of Messi and Ronaldo?Some say it's Ronaldo because of how deadly he is from all angles, while others say Messi because of the many records he's broken throughout his career.Well, they say facts are facts and one football fan has created a six-tweet thread proving that Messi is statistically the better goalscorer out of him and Ronaldo. Check it out.

MESSI > RONALDO

Sorry CR7 fans, but it's hard to argue with that.

Ronaldinho was asked the same question recently and he believes Messi and Ronaldo's rival is great for football, no matter who is No.1.

"It is a healthy fight, which is good for football, because they are two players who are always there to define who will win the Golden Ball, to see who will be the best in the world," he said.

"It's a fight that is good for football and all those who love this sport."