Both of these ships have features that Carnival's guests in China can enjoy. The Carnival Miracle recently underwent a major dry-dock that added multiple Fun Ship 2.0 features to the ship. The ship offers multiple spaces outsides and has many pools. There are multiple places to dine onboard the ship including the buffet, main dining rooms, and Nick & Nora's Steakhouse (fees apply for the steakhouse). The Carnival Splendor also offers numerous outdoor amenities for guests to enjoy too. No specific information has been given at this time about the Carnival Splendor receiving additional upgrades before sailing to China.
The Carnival Miracle holds 2,124 guests and the Carnival Splendor holds slightly over 3,000 guests. Both of these figures are provided by Carnival and are based off each ship's double occupancy. This means once both ships are sailing from China, Carnival Cruise Line will be offering cruises over 5,000 guests. This is a nice expansion for the Chinese cruise market and Carnival Corporation's share of the market.
Here is a link to Carnival's official press release: Click Here