You put a superstar on a good team, you have a better team, you put any better player on a good team, you have a better team. You put a superstar on a mediocre/poor team, you have a better but still mediocre or poor team. The 'Super' part is super overrated. Superstars have toiled in futility all over baseball from time immemorial not being able to raise their teams to any success (recently Trout, Ohtani) and teams with better construction have won more after shedding their superstars (Seattle after losing Griffey and ARod). A good team is always the true sum of the total of it's parts, and two good players will win you as many additional games as one great one.
Even from the clubhouse angle, the players that do have a talent for helping to drive their team mates are often not even the best players themselves.