Good to hear (b ᵔ▽ᵔ)b
Pointing out one game doesn't really exclude all the others.. and that's even implying a 3 star Senki is that much better anyway.
Also, not everyone takes their losses the same way. I for one actually paid real money for Gacha several times in IW:Z and KamiPro and got trash that may have as well been evolution fodder if it wasn't already; so what, tough luck. If you were to bet money on what's essentially a gamble and then complain if you 'lose' then you shouldn't be betting in the first place.
But I think you're missing the point. Presumably a guy dropped the game just because he got unlucky after spending 5 gems which he probably just got through playing the game anyway. I get the possible frustration, I think everyone who's been around gets that. And that's exactly it isn't it.. most if not all the 'gachas' from every other game around here contains trash, paid or not; as proven by my own experiences. People are free to complain about how wrong it is to get trash from a paid service. But if that service is just 'gambling' then obviously they haven't grasped the nature of it yet. Trash-filled gachas are not exclusive to just this game or even Nutaku games.