iPhone wasn’t known by the public until it was announced and it did pretty well 
I take it you haven’t ventured into AoE2:DE forum land recently? There are some who say they were lied to because the word “campaign” was used instead of “scenario” for some upcoming DLC marketing… and it has made several unhappy AoE2 fans. Personally, I think it’s a little unwarranted and I’m looking forward to the DLC, but I can see the issue…
Sometimes it seems like game studios should just go into radio silence until release 
… take one out of Steve Jobs’ playbook