Battleship and Grand Cruiser

[foto69man]

I wanted to see if I'm reading the rules correctly for aChaos fleet.

To have both a Battleship and Grand Cruiser in the same fleet, would I need 6 Cruisers/ Heavy Cruisers?   Or does the Grand Cruiser meet the requirements for one Cruiser?

The wording is different than Imperial choices/wording with the battle Cruisers

[horizon]

Best to example, for Chaos this is legal:

Murder cruiser
Murder cruiser
Hades heavy cruiser
Repulsive grand cruiser
Desolator battleship

Standard rulebook.

For Imperial, from armada, battlefleet Armageddon:
Lunar cruiser
Lunar cruiser
Armageddon battle cruiser
Lunar cruiser
Lunar cruiser
Vengeance cruiser
Apocalypse battleship