Exactly a good halo game would sell but halo 5 isn't that. If they keep it up I wouldn't be surprised if halo 6 sells less than 5.Halo 1 5.5M
Halo 2 8M
Halo 3 12.1M
Halo 4 9.75M
Halo 5 5M
He's actually not wrong tbh and that doesn't include the spin offs and remasters. Halo reached its peak with Bungie and 343i is killing the franchise.
Halo 5 had the record of fastest selling Halo game and then word of mouth on how shit it was killed the rest of the sales imo.
It's a shame because I love the halo franchise but I don't like what 343 has done with it.