You spawn in armour mode, you move/sprint/jump at normal human levels, you DON'T have webbing over your hud nor a shiny lit up suit.

Power: you activate power the way you would activate armour, you have all the power abilitities of speed, power jump, air stomp(?) kick cars PLUS faster walk/strafe speed, faster reloading, reduced hipfire spread and less recoil than armour. Your suit shines red for cell/blue for marines. Obviously less health than armour

Cloak: You don't have access to power abilitites in cloak, BUT you have crysis wars level of invisibility with a C2 level of energy drain. Also with the least health of all, naturally.