There have been 9 instances of a player averaging 40+ppg in a playoff series. MJ has 5 of them.

The 9 times this has happened are as follows:

Elgin Baylor loses to the Celtics in the 1962 NBA Finals in 7 games:

40.6/17.9/3.7 on 51%ts

Jerry West beats the Bullets in the 1965 WCF in 6 games:

46.3/5.8/6.8 on 45.3%FG and 90.5%FT

Rick Barry loses to the Sixers in the 1967 NBA finals in 6 games:

40.8/8.8/3.3 on 45.9%ts

Bernard King beats the Pistons in the 1984 first round in 5 games:

42.6/8.0/2.6 on 64.4%ts

Michael Jordan loses to the Celtics in the 1986 first round in 3 games:

43.7/6.3/5.7 on 58.4%ts

Michael Jordan beats the Cavaliers in the 1988 first round in 5 games:

45.2/5.4/4.8 on 63.2%ts

Michael Jordan beats the Sixers in the 1990 ECSF in 5 games:

43.0/6.6/7.4 on 61.6%ts

Michael Jordan beats the Heat in the 1992 first round in 3 games:

45.0/9.7/6.7 on 66.8%ts

Michael Jordan beats the Suns in the 1993 NBA finals in 6 games:

41.0/8.5/6.3 on 55.8%ts