Here are the stats for each Jak.

-Jak-

Run: 2
Attack: 3
Jump: 4

-Dark Jak-

Run: 1
Attack: 4
Jump: 4
Dark Bomb: 6
Dark Blast: 5
Dark Invisibility: 0
Dark Strike: 5

-Light Jak-

Run: 2
Attack: 3
Jump: 4
Light Regeneration: 0
Light Shield: 9
Light Flash Freeze: 6
Light Flight: 0

* Note: Dark Invisibility & Dark Invisibility
(while Dark Jak, press triangle cheat at secret
shop) are the same.