Soundwave on 18 February 2014
It's impossible for one company to support 2 platforms largely on their own like this. It's hard enough to do one. Sony/MS would fare even worse in the same position.
Nintendo needs to unify their development lines a long time ago, but they kinda had no choice but to go the discreet handheld + console route after the DS and Wii were both such big successes.
