Titan Fall ?

So to all my gaming friends hat is your opinion on the fact that Titanfall was supposed to be the system seller for the xbox one but on April 8th it will be released on the xbox 360, not counting that it is also out for PC?

I think it is smart and awesome to continue supporting the old hardware (keeps me playing the exclusives) but if this was supposed to be the current flagship for the system why have it on so many systems?