The development companies are different: Peace Elite was developed by Tencent Photostudio Group, and Survival of the Jedi was developed by Blue Hole in South Korea.
The devices used are different: Peace Elite supports both mobile and PC; As of March 25th, 2024, Survival of the Jedi only supports playing on PC.
The difficulty of operation is different: the difficulty of peaceful elite operation and getting started is slightly lower than that of Jedi survival.