I disagree with you on Worthy also.
Had Worthy played on terrible teams, he probably would have averaged 30 points a game.
George Gervin averaged 26.2 points during his NBA career playing on San Antonio teams that for many years weren't very good.
Same for Pistol Pete. Maravich averaged 24.2 points per game while playing for teams that sucked.
However, Kevin Love is the better analogy. Prior to playing for Cleveland, the previous season Love averaged 26.1 points per game in Minnesota. In his two years with LeBron and Kyrie, Love has averaged 16.4 and 16.0 points.
If Love could average 26.1 points without LeBron and Kyrie, but 16.0 with them, there is no reason to not think Worthy could add 10 points to his season average playing on a sucky team without Magic and Kareem.