I agree entirely, your comparison of the 2 lines mirrors my own, although we have only done 2 RC cruises, Navigator and Independence, but about 20 with P&O.
As for the shows, what else would you expect when you go to see We will Rock You, Grease, or any of the other well presented Broadway shows that RC have on board, than the hit show they portray?
A lack of loungers or outdoor seating can be a problem, but surely if there is space for more, then reporting this to hotel management might produce more loungers from storage.
But I guess getting a problem resolved would reduce the strength of the complaint.😉