This. Let's look at the examples of multiplat "failures":
CoD:BO2: Showed up 5 days late with no Nuketown, and no further DLC; patches way slower than on other platforms.
AC3: Showed up three weeks late.
Batman: Showed up a year late at full price with game of the year versions for half the price on other systems.
ME3: Showed up over 8 months late at full price withe other versions much cheaper, and Trilogy on other platforms for same price; no DLC, no support.
Darksiders 2: Showed up late.
Madden/FIFA: Showed up late missing features.
Not a single damn game has been released on a level playing field. Oh yeah, except Sonic racing. Which sold almost as much as the PS3/360 versions apparently with a MUCH smaller installed base, thought I don't have numbers.
AGAIN, SELF FULFILLING PROPHECY. Some if it's on Nintendo, but not all of it; not the majority. With the exception of MAYBE Ubisoft, these third parties are a bunch of ass clowns with the way they handled the Wii (and now the Wii U).