I served on Ocean and she was a good ship, I really thought. Far, far better designed than Invincible (which in retrospective was bloody horrible in just about all aspects to my own selfish concern).
Ocean has a Big Hangar, aircraft lifts that were reliable and didn't collapse, wider flight deck, better access to the same deck, larger wider passageways, multiple compartments meaning lots of space for more people.
Better people, less big shouty egos, a far better ships company all around.
Downside, some pretty thuggish embarked Royal Marines one has to witness to believe actually allowed to serve, but they are what they are. Piss poor aircraft refuel system to the flight deck which had serious knock on effects at the time. Limited build quality in some areas, good in others.
Bigger deck and space generally makes for happier people. HS.