Their similar on-field talent might be sufficient to make Gareth Bale and Cristiano Ronaldo the two most expensive footballers in history but it was suggested to Wales manager Chris Coleman that the big contrast could be found in their treatment of team-mates.
Whereas Ronaldo reacted last week to Portugal's concession of a goal against Hungary with a tantrum, one of the most quietly influential features of Bale's contribution has been his constant encouragement of team-mates, even when they do make mistakes.
Coleman had already predicted that there "won't be any love lost" between the Real Madrid Galacticos when they meet on Wednesday and, while careful not to specifically evaluate Ronaldo, his observations about Bale felt telling.
"They are obviously different types of people, different characters," said Coleman. "Whatever Bale brings to the table for us, that's him. He's not manufactured, he doesn't try to be something he's not.
"Gareth is just a nice guy, a family guy. He's livelier on the pitch than off it because he doesn't say a lot.