Just for the heck of it, I compared Zion's bulk to Sir Charles.
Zion is listed as 6'7" - 285. That's 3.61 pounds per inch.
More, if his height is exaggerated, as was Charles'.
Chuck was listed as 6'6" - 252. That's 3.23 pounds per inch.
His actual height was 6'4 1/2". That's 3.29 pounds per inch.
No matter how you look at it, Zion is carrying more weight for his height than the Chuckster.
And, as Zion's career progresses, will his weight do the same? Probably more than his height.
Zion looks slimmer than Charles, but I am suggesting that he could be more prone to lower
body injury the longer he plays. I don't know how Charles' big butt plays into this.