All the cruise suite categories are clumped together on the description but there are significant size differences. Here's the description from a source I use regularly.
Bedroom with twin bed convertible into queen-size bed , private balcony, separate sitting area with sofa bed, bath with tub & shower, two TV, walk-in closet, refrigerator, wet bar.
Average size with balcony: OS - 591 sq feet, PH - 536 sq feet, PS - 473 sq feet, VS - 383 square feet.
Average balcony size is 92 sq. feet.
On Decks: Baja, Caribe, Dolphin, Emerald