It’s the same class of powers, it’s just that chief executive is a better and less ambiguous name for the CEO of law than “prime minister”, which out of context could mean anything—what do those ministers do? Also, in the United States we call our ministers cabinet secretaries, not ministers, so it wouldn’t make sense to call the chief executive the prime minister.
One would expect a Prime Minister to be Prime over Ministers. I don’t see the need to rename everything Ministry of This or That, so Prime Minister doesn’t really seem appropriate.
How does it differ from the powers that prime ministers usually have?
It’s the same class of powers, it’s just that chief executive is a better and less ambiguous name for the CEO of law than “prime minister”, which out of context could mean anything—what do those ministers do? Also, in the United States we call our ministers cabinet secretaries, not ministers, so it wouldn’t make sense to call the chief executive the prime minister.
One would expect a Prime Minister to be Prime over Ministers. I don’t see the need to rename everything Ministry of This or That, so Prime Minister doesn’t really seem appropriate.