[Matrixbeast]

Let's not mince words. It's a sports bra

But while your problems with Changeman can't just be handwaved, you also have to keep in mind that it is a pilot.
I've honestly never seen a pilot episode that was anywhere beyond "Average" in terms of quality. Even my favorite Sentai, Gekiranger, had a mediocre pilot.

I haven't seen Changeman, so I don't know how large or small these issues may actually, but don't let Sentai's tendency for horrible first episodes dissuade you.