I'd say a pretty significant edge in regular season peak. It sort of embarasses Messier when you bring up his top 10 scoring finishes but here goes:
Esposito - 1, 1, 1, 1, 1, 2, 2, 2, 7
Messier - 2, 4, 6, 7, 7, 10
I for sure give the playoff edge to Messier but that peak of Esposito's is unreal and in my mind has always catapulted him to higher status. It isn't as if Espo took a nap in the postseason either. He led a Rangers team to the final when he was an old man while Mess missed the last 7 years of the postseason. In general, while we know that Messier brought a lot to the table, the truth is he does get penalized for having such an underwhelming record in top 10 scoring finishes. You look at every other forward ahead of him and it's not all that close which is why the "2nd all-time in scoring" thing is deceptive. To Mess' credit he had an incredible career from 1979-'97 with good longevity. After that I've always felt that his final 7 years did nothing to enhance his status.
Messier's final seven years might not have enhanced his status but it did not hurt him either. He kept playing for the love of the game an dhe could have signed with a better team then the Rangers but his heart was with New York.
Phil Esposito was one of the greatest players to ever play the game but I do know from what I have seen of both players and I have seen more of Messier of course then Espostio. I would take Messier ahead of Esposito any time.
Now no one can argue the fact that Esposito was better offensively then Messier. Esposiot scored more and got more points then Messier when you look at his production. He was moe creative as well. Now both were helped in their careers playing with great players. I think though that Esposito was helped by Orr more so then Messier by Gretzky. I am not saying that Esposito would not have been as great without Orr but that helped him quite a bit. Espostio's points went up drstically when he went to Boston and alot of that has to do with Orr. Messier's best days were when he was no longer on the same team as Gretzky. I am just making the point that when you look at Espostio's numbers especially in the early to mid seventies Orr's presence was a major inlfuence into his numbers
Their are things though that Messier did that does not translate to stats but does translate to wins and losses. Messier was one of the most feared players in the league. He was bigger then most and was nasty. He was one of the dirtiest players in the league and put the fear in the opposition and his own players just ask Kent Nilsson. There was a saying when it came to Messier. Don't wake him up. There was a reason for this. Messier could change a game just by his physical play and a look.
Esposito only won 2 cups as a player that is it. Yes it takes a team to win and in the 70's you had the Canadiens and the Flyers who were good and won cups but in the end the greats find a way to win the cup. Eposito never broguht his game up when it was needed the most. What I mean is that after 72' when Orr was playing on one knee and sometimes no knees he was doing everything he could to win but it just didn't feel like Esposito was able to bring his game up. He played the regular season at such a high level that when the playoffs came that was it he couldn't raise it anymore
Messier's regular season might not have been to the level of Esposito but when it came to the playoffs he raised his level so much. It was Messier who scored the biggest goal in Oilers history against the Islanders. In the 1990 playoffs he changed the series around against Chicago and of course we all know what happened in 1994. Their are many more times Messier did this. Whether it was a big hit or a key faceoff or even blocking shots. Messier would do what ever was needed to win for his teams. This is what makes him way above Esposito for playoffs and has a captain
No disrespect to Espostio as he was amazing but in the end Messier brought more to the table then Esposito. Both played for a high scoring team at one point and both at one point in their careers played with arguably the two best players ever respectively. The only difference was that Messier was on a different line and was not the primary center on the team. Where Esposito played almost all the time with Orr when Orr was healthy of course.
With Orr Esposito's averaged aprox. 124pts a season without Orr he averaged 71pts of course taking out his first and last season
Messier averaged 89 pts with Gretzky not counting his rookie year. Up to the age of 37 without Gretzky he averaged 87 pts
For playoffs Espostio averaged 13pts a year with Orr. Without Orr he average 6pts not inlcuding his rookie year and never won the cup without Orr
Messier averaged 18pts when with Gretzky on his team not including rookie year. without gretzky on his team he averaged 18pts and won 2 cups
So yes Espostio might have had a better peak but just how much of that is attributed to Orr.