I am becoming more and more convinced that Messi is absolutely the greatest player ever, and certainly has the highest peak of any player.
The man dribbles as well as Maradona, gets into position and shoots as accurately as Gerd Muller, and in the last year and a half has been giving through balls like Michael Laudrup (particularly last season). That combination is about as much of an unstoppable goal-scoring/creating combination as possible.
To add to that, he is a fantastic short possession passer. No, he's not Xavi, but you really do have to be a world-class possession passer to fit into the passing scheme at present-day Barca. Very, very few midfielders in the world could do it, and Messi absolutely can fall back into the midfield and fit in.Yes, he loses the ball more than the others, but that is because he goes on runs and tries through balls more, not because his short passing isn't on par. Think about this. Messi is a forward who also ranked 9th in La Liga last year in passes per match and 6th in the Champions League (with 80.9 passes per match in the CL, at an 87% success rate). That is absurd and largely unheard of involvement in possession for a forward.
Similarly, he has a real good work rate for a star forward. He certainly has some games where his work rate isn't very good (as you'd expect from a star forward playing 60 matches a season + NT matches), but the Barca system involves an insane amount of pressing, and usually Messi is well involved in this. You certainly see him tracking back and pressing more than you saw from most other players among the best ever (since most of them were star forwards like Pele or purely offensive AMs like Zidane).
So in my mind, here's what we have. Between his dribbling ability, positioning, and accuracy, Messi is possibly the best goalscorer ever. Between his dribbling ability and through balls, he is possibly the best forward ever at directly creating goals for others. His involvement in the possession game is unheard of for forwards, and his work rate is far above average for a star forward.
I just can't justify putting anyone ahead of him. Pele had similar goalscoring and was a great passer, but I think Messi's superior dribbling allows him to create more for the team than Pele could. Maradona's direct creation for others through dribbling and through balls was similar (for those who think Maradona was better in this regard, watch videos of Messi's through balls last year; it truly is on par with Maradona), while his contribution to the possession game was even better. However, Messi was a far better goalscorer, which IMO definitely is more important. I'd also say Messi's work rate was a bit better. Cruyff's creation for others was pretty similar, as was his contribution to short passing. His work rate was even better than Messi's, but Messi's edge in goalscoring puts him ahead again in my view. There are others who people might list as the best ever, but those are the main people. I just don't think any of them can match Messi's combination of goalscoring, dribbling, and through balls.