Next to the all-star fireworks Warner Bros. unleashed at CinemaCon last month with Adam Sandler, Johnny Depp and Clint Eastwood, the studio kicked off WonderCon’s Saturday movie schedule on a sleepy note with a low wattage of stars. Comparisons to Disney’s previous D23′s are inevitable, especially due to the fact that the Mouse House has trotted out such megastars at this same venue — the Anaheim Convention Center Arena – in its previous confabs, i.e.