1)Both of them have worked very hard and have come from a humble background.
2)Messi had a deficiency of Human Growth Hormone during his childhood.
3)ronaldo’s son does not know who his mother is.
4)Both of them have not won a world cup.
5)messi has not won any major trophy for his country.
6)Messi is just pure talent.He doesnt need to put in a lot of effort to score goals.Ronaldo is not as talented as messi,but still does reach the levels of messi with his hardwork.
7)Messi doesnt pay his tax.Ronaldo constantly donates his salary.(Messi’s dad is his financial advisor).
8)Messi has just played in LaLiga.Ronaldo has won the champions league for both Manchester United and Real Madrid.