between the ofna Jammin RTR and the pro kit??

more upgrades on the kit, like all factory parts, and the rtr does not have them. PLus with the kit you choose you own radio, servos, and engine.

the pro kits usely come wit some hop up parts and no engine and no radio and servos and pipe

Different chasis,braces,servo tray is carbon so is the front steering brace, but no servo's or engine, radio