Oh you're absolutely correct, they're all right wing.

I'm saying that for a U.S. audience, "both sides are the same" is a proven losing argument. There's some Rage Against The Machine music video from a quarter century ago (Jesus Christ) that features Bush II and Gore saying -- verbatim -- the same things. You can go back a generation farther, to left wing protests of the '68 Democratic Convention and MLK's letter from Birmingham jail, and see basically the same argument.

It didn't work any time over the last several decades, so we should try to learn from that. I think one reason it didn't work is that it simplifies too much. Something along the lines of "the two parties are more alike than different," or "at the end of the day they're both imperialist parties," or "Democrats are just five years behind Republicans and have better PR" could get the same point across without making it so easy to say "well come on now, of course they aren't the same."