... and with one fell swoop Halo BC just pretty much killed Master Chief Collection.
However, Halo MCC is the only way to:
Play all games at 60fps
Halo 1 multiplayer online. Halo CE Anniversary just added maps to Halo Reach MP.
Halo 2 campaign and multiplayer. I'm assuming the campaign part will no longer be the case once OG BC is out.
Though Halo MCC did not have firefight for Halo 3.
It's a shame they can't update the game code/logic somehow to force unlocked frame rate to achieve 60fps when the X is out.
Other than resolution and framerate (which should at least be rock solid 30), every other aspect should be better in the BC version.
-Halo 3 and 4 will now have their full playlist selection with their individual ranking systems, instead of the mixed and one-per-game playlists of MCC. I'm pretty sure all the 360 Halo games still have healthy populations too.
-Halo 3 has full armor and emblem customization unlike the MCC version
-ODST's best in the series Firefight is now available.
Halo Anniversary is the only one that really has no benefit for playing the 360 version, unless you don't have Reach to access the multiplayer playlists. If MCC's online actually worked well it'd probably be better overall, but even then the limited playlists are a bummer if you really prefer one game over the others.