The percentage of play time per a game type is not calculated correctly. My breakdown is:
1d03h30m (11%) War Games Match Making
0d00h00m (0%) War Games Custom
0d10h36m (34%) Spartan Ops
0d16h58m (55%) Campaign
It should be:
(50%) War Games Match Making
(0%) War Games Custom
(19%) Spartan Ops
(31%) Campaign