Probably not as well as they'd like. A 4.4% only gives them about one point up over last week, and isn't even one of the show's higher ratings to date.
This. The highest rating that the show has ever gotten so far is 5.2%, & that happened back in episodes 8 & 16. Episode 12 has a rating of 5.1%, & episode 3 has a 5% rating. The rest fall in the 3% & 4% ranges, along with the lowest rating in episode 22 with 2.2% (Escape's debut) so far.
http://www10.atwiki.jp/shichouseiko/pages/542.html What I got to say about the ratings is that, if a Sentai series were to have very low ratings back 10+ years ago like Go-Busters currently has, Sentai would've most likely been cancelled & would've gone the way of Metal Heroes.
Heck, Sentai came
very close to cancellation when Ohranger had very awful ratings, & Go-Buster's current average rating is worse than Ohranger's right now. The very high toy sales of Ohranger most likely saved Sentai as a whole back then.