I mean if Time Bokan got a second season with similar ratings, I don't see why MHA wouldn't. Also it's rating has been going up every week. It started at 3.3 to now be at 3.9. Anyway what do you mean by good numbers for that time slot? These numbers are just so volatile it's hard to know. Also we talk numbers but we have no idea what Shuiesha is aiming for.
I'm not sure where i am losing you.
the time slot that MHA is airing in is one of the best time slots to air in period. even garbage shows get the ratings MHA is getting. Even shows that have little budget like ace attorney or ultimate otaku teacher still pull the ratings MHA is getting.
logically if you are a business and you can attract the same amount of viewers whether you put on episodes of a cheap to make show, or a more expensive to make show which one do you choose? The cheap one of course.
that's the main thing I am trying to say. You can't just look at the ratings of MHA and see it is in the top ten list and assume that is good in general. That slot always preforms great thanks to detective conan drawing people in that airs after it. Most of the time the shows that get that time slot are 24-26 episodes (aka what MHA is getting this time around) but if MHA isn't performing above the other shows that have been in that slot then there is little reason to give it that slot again meaning that the third season could see a reduced budget or reduced episode count in a different time slot later.
AKA good numbers in general, but not good numbers for that time slot.
as for time bokan, it was also likely a lot cheaper to make than MHA. so it's not a good example to keep track of. I mean it happens all the time in american TV as well where shows getting better ratings get cancelled over other shows because the lower rated shows are much cheaper to make.