I played a ton of Halo PC -- long before the days of Ascendant Justice -- and I will admit that it was a pretty janky online port, but it was still way more enjoyable than anything in Halo Reach or Halo 4. I would have taken a Halo PC 360 port long before that insulting garbage packed into Anniversary.
Real talk. Still waiting on that Halo Steam Trilogy...
$20 says that H2A ships with no MP at all.