while reading this answer it said in one of the quotes
After the first season of Beast Wars (comprising 26 episodes) aired in Japan, the Japanese were faced with a problem. The second Canadian season was only 13 episodes long, not enough to warrant airing on Japanese TV.
however i have a number of series which don't have even 20 episodes like Puella Magi Madoka Magica (12 episodes), Black Rock Shooter (Series) (8 Episodes), Magical Girl Lyrical Nanoha (the original series and A's, 13 episodes each) and a number of Monogatari series have less than 10 episodes
So i am wondering if what the quote says is accurate and if so how does a series, like the ones i mention, get aired on TV if they aren't long enough to warrant airing on Japanese TV?