Exactly. Disney is a marketing powerhouse and they advertised the shit out of TLR and JC and look what happened to them. The amount of advertising isn't important, it's about whether it's effective.
Disney often spends 100-150M on marketing and Lionsgate spent 40M marketing THG and they did a really great job with it.
Ender's Game either isn't a good film or they have no idea how to market it because it doesn't look very appealing IMO.