Mojo doesn't seem to work properly

[Thor24]

I've noticed on both HH and CXH that the Mojo has it's own will in the seasons, at both first battles I should've gained 40 Mojo, in HH I only got 33 and in CHX I got about mid 20's, I've gained more in other battles than it said I would earn and in some I get less than it says I would earn, this is really strange to me, what's going on with that?