Sosuke seemed to have feelings for Miu Sutou (Go-On Silver).
Scott only saw Gemma (Ranger Operator Silver) as a friend.
Sosuke was from present day Japan.
Scott was from a post-apocalyptic Earth in an alternate dimension.
Sosuke has a confident attitude and is somewhat childish
Scott has an all-business attitude due to military background.
Yogostein turned him into a metal statue in his final attack, causing the others to believe him dead.
Shifter tried to mind-control him in his final attack, but it didn't fully work.
Sosuke's actor appeared in the the Shinkenger/Go-Onger team up.
Scott was suit and voice only for Samurai/RPM team up.
Sosuke was one of the seven Go-Ongers that appeared in the Shinkenger/Go-Onger teamup.
Scott was the only Ranger Operator to appear in the Samurai/RPM teamup.
Sosuke returned to racing after Yogoshimacritein's demise but forced to restart his carrier from go-kart due to long absence.
Scott returned to the Air Force after Venjix's demise but retains his previous military rank before his recruitment into Series Operator. Even promoted to leader of Eagle Squadron, as a result of him becoming second-in-command by posthumous recommendation of his brother.