[skilled]

IMHO
pretty good to good = 1bb/100 to 1.5 bb/100 in 20/40 to 50/100

good to great = 1.5bb/100 to 2bb/100 in 20/40 to 50/100

Worldclass superstar = 2bb+/100.

This is as far as twoplustwoers are concerned. Obviously if you are beating 20/40-50/100 for 1bb/100 you are a great player, just not amongst other twoplustwo high limit players.

BTW, if you run at 2bb+/100 over 100k hands at those limits in the last twelve months... I want lessons lol.