While I support your premise: sales = consumption; more sales does not neccessarily reveal what the product is used for.
If for some reason there is some free to play mode that has no microtransaction offers on the table but creates a buzz: sales may increase out of interest for that mode: CFM or Team Play are examples while MUT revenue still remain the same or even goes down.
Sales represent initial interest and anythig thereafter is speculation on how the consumer spends their time and money on the game.
In respect to MUT, their revenue lines will eventually level, if they have not already, and may even plummet: that would be more devestating than declining sales.
FWIW, I believe MUT's inception was M12 - it is going into its 4th season and I know as a member of that community that MUT gamers are becoming more and more abhorrent towards Madden's slanted microtransaction schemes.
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