Is there 4-player local co-op in Disney Infinity 2.0?

I just bought the Disney Infinity 2.0 Marvel set for Wii U. There are two slots for character toys on the base, and 2-player split screen play is easy to set up.

However, the box has a Wii Remote icon with a number "4" in it, and includes the text "1-4 player (2-4 online)". This seems to imply that the game should support 4-player local play. However, if this is possible, I haven't figured out how to do it. Is the box wrong about supporting 4 Wii Remotes?

According to Co-Optimus, Disney Infinity 2.0 only supports 2 players for local co-op. This is the same for all the consoles and the PC.