Carpe is not Munchkin, munchkin has been IGLing JP teams in international tournaments since the first masters event, carpe hasn't even played this game seriously until episode 5 and even now he only shown some improvement with some pop off moments off the IGL role, his already lackluster firepower will take a hit if he IGLs again
In a team with Munchkin, xeta and carpe, Carpe is the 3rd choice to be a caller