You can make the case that Marcus Smart is the Draymond Green of guards, becuase he can guard seemingly anyone within reason, people up to 6" taller than him. He's extra strong and tough like Green and also both players are exceptionally long for their height.
Also the only area where they can struggle is scoring the basketball. They can both add a lot by passing and handling. Green clearly better at both though right now.
Green is avg 14ppg this year, but last year only 11.7 and he changed the game.
Attest is self explanatory how he relates to Smart he was just bigger. Surprisingly Artest maxed out at 20ppg. Which would be fantastic if Smart ever got there.