In Francis' case, the supposed age advantage is mitigated to a great degree by the year+ he lost to a couple of injuries and by the fact that he is new to the country and to US hoops, which is an entirely different animal than what he grew up playing in the D.R. in terms of competitiveness, quality of talent, year round games, etc. He apparently was a pretty good baseball player there, so he likely spent far more time on the ball field than he did in a gym. I think you also have to look at what skills he has versus where he can improve. The guy is a first rate passer with a great feel for the game. That isn't something that necessarily comes from being bigger or stronger than someone else. His biggest weakness is his shot, which likewise takes little advantage from being bigger or stronger than the competition. He definitely has room for improvement, but in my opinion his strengths would be there no matter the relation of his age to his opponents. Physical post players would be a different story. Same for power guards.