Those weights are relative to the time they played though, to me Zeke at 225 isn't far away from Emmitt's era at 208. Players are just bigger now. In Jim Brown's era, he was a freak of nature at his size, agility, power, and speed. Payton wasn't far from Emmitt's size and weight, but he looked so much bigger than Emmitt cause of who he was playing against were smaller.
Earl was an exception, so was Bettis, I don't want to see Zeke in the mold of either one of them. Earl was just plain nuts (don't make me mention his drop foot), and can barely walk cause he would take on 3 guys instead of just going out of bounds. Bettis had great feet, and much bigger than the size they listed him.
Would rather Zeke mold his game into a modern day Emmitt than pretty much anyone else in the game according to his metrics. Zeke is different, he's his own and shouldn't be compared to others, but making people miss should be more a part of his game instead of hurdling people.