Your wrong tbh but I can see how the perception of this statement has been built over the genStarting with Halo would be such a letdown. Then again Sony started their next gen conference with 5 minutes of a PS3/ Xbox 360 game, so...
In any case would it really feel THAT different whether they begun/ ended with Halo, Gears or Forza? Those are their 3 trump cards, except they aren't playing with a deck of 52 like Sony and Nintendo. They have like 10 cards. And a couple of them are Call of Duty/ Madden, 4 are a long way from release since they only thought of buying 1st party developers a couple years ago, and one will be Ori 3 as a token for genre diversity so they don't have to spend time bolstering a roster with things that don't go click click kaboom in the night.
We'll get something good maybe in 2022 onward. Right now it's so bad even MS is steering the conversation away from exclusive content.