I think I said this last time this thread came up on evo vs. sti - the maintenance schedule (dealer maintenance schedule) for the STi is not bad at all. Mostly just fluid changes through 60K even 60K I think it only has inspect belts, all though i’d likely replace them just for good measure.
I understand the evo maintenance schedule is a bit more “preventative” in nature. They very well could actually require the same maintenance, mitsu may just be more cautious?