Matthew 25:19-23. Some men are better than others because of their talents. Some simply do better than others with the talents that they do have.
Me, I can only try to hang my hat on a rather poor imitation of Luke 15.
But I'll tell you what I think is important: What does St. Paul mean when he says "Star differs from star." My impression is that he contemplates not only a difference in kind but in degree.
Still, the formulation to stick with is, "Everyone in heaven is as happy as he can be!"