Second reaction = Marques Johnson vs Carmelo would be an interesting comparison. Melo obviously had a longer career but peak vs peak / prime vs prime is very interesting.
So I am going to call Marques Johnson's prime from his rookie year in 1977-78 to 1983-84 when he was traded to the LA Clippers. A 7 season prime.
Melo could go for a longer prime from 2006 to 2014. 9 seasons. I will go from 2007-08 to 2013-14 for a similar 7 year figure.
Scoring = Melo 26ppg to Marques 21ppg
Rebounding = Marques 7rpg to Melo's 7.1rpg
Assists = Marques 3.7apg to Melo's 3.1apg
Defense = Marques should have been selected on All-Defensive teams but never got the nod. A high level defensive player. Melo was an average defender at his best and often not even that.
Steals & Blocks = Slight edge in both Marques. 1.3 steals to 1.1 steals. 0.8 blocks to 0.5 blocks.
Shooting & Scoring efficiency = Marques was an efficient scorer with a 53% FG%. The three point shot was not in the league when he first started. He never took many. He was a good outside shooter from 20 feet for a forward. Melo 45.6% FG% and 37% from three on low volume. Melo was better at getting to the line with 7.2 FTA per game at 82%. Marques was at 4.9 FTA but only 73.6% FT%. Marques had a TS% of 56.6% over Melo's 55.2%.
Both players were well rounded scorers. Both could post, both could drive, both could move off screens off the ball. They both had midpost games. They both had an outside shot. They could both handle the ball. Marques was a better passer who could play initiate the offense as a PG if required.
Marques was the better rebounder and a vastly superior defender.
Melo had a more aggressive scoring mentality which made him the better overall scorer. Both were physical athletic forwards who were primarily SFs but could also play PF.
Marques Johnson made one 1st team All-NBA. Melo none.
Marques made two 2nd team All-NBAs. Melo also 2.
Those 3 All-NBA selections were from 1979-81. Marques got screwed in the 1978 selection because he was a rookie. He deserved it then as well. After that, it was hard to make it because Bird and Julius Erving dominated the SF position in the early to mid 80s.
Melo has 4 3rd team All NBA selections. This did not exist in Marques' time in the league.
Melo has the advantage in All-Star selections with 6 ASG appearances to Marques' 4 ASG selections.
-----------------------------------------
I know if I was offered either one of them for their 7 year primes, Marques is the one I would select. He was closer to Tatum in terms of having that all-round game. Being a difference maker as a defender, rebounder, passer as well as being a very good scorer. Whereas Melo was more of an out and out scorer who could rebound and did as little defensively as he could get away with.
---------------------------------
I thought Marques was a top 10 player in the league from the late 70s through early 80s. Melo had several top 10 player seasons as well.
--------------------------
Some advanced stats
Win shares = Marques 71.1 to Melo's 55.5
WS/48 = Marques 0.187 to Melo's 0.149
BPM = Marques 4.3 to Melo's 2.8
O-BPM = Marques 4.1 to Melo's 3.8
D-BPM = Marques 0.2 to Melo's -1.0
VORP = Marques 28.9 to Melo's 21.5