Their bodies are similar:
Player A: Height: 6'3.25 6'9.75 WS 8'6 Standing Reach
Player B: Height: 6'3.5 6'9.75 WS 8'5.5 Standing Reach
Their college stats per 40 are very similar:
Player A: 22.3 points per 40 47.9% 2PT% 41.1% 3PT% FT 75.6% 6.5 Boards 5.8 Ast 1.8 Stls
Player B: 24.9 points per 40 50.2% 2PT% 41.3% 3PT% FT 64.9% 6.1 Boards 6.4 Ast 1.7 Stls
Your stats are wrong. Russell: 22.7 points per 40, 6.7 boards, 5.9 assists, 1.9 steals
Fultz: 26.0 points per 40, 6.4 boards, 6.6 assists, 1.7 steals
http://www.sports-reference.com/cbb/players/dangelo-russell-1.htmlhttp://www.sports-reference.com/cbb/players/markelle-fultz-1.htmlMakes a bit of difference, doesn't it? And while they may be similar size-wise and even somewhat with their statistics you just can't look at numbers. You have to look at the tape.
Russell was and is only considered an average athlete. Worse-than-average jumping and pretty average explosiveness was pretty much the consensus on scouting reports. He got by in college because he was simply taller and longer than most of his opponents. He's not nearly the athlete that Fultz is which is why that Fultz' floor is likely somewhere above Russell's ceiling (barring injury or someone being a head case). Fultz has every tool that Russell has, all the size that Russell has but has the athleticism to back it up.