Compare Philippa with Muzzle for even more clarity.
Muzzle is a neutral card and neutral cards are suppose to be a tad weaker. Regardless, Muzzle is still a good card. I've also said before: Philippa is fairly stated. In an engine meta, she is good, in a removal meta, she not as good. Overall, she is fine. Furthermore, there are other Syndicate cards that need fixing. Philippa doesn't even make the top 5 (which is worrisome itself, I guess). If she does get nerfed, I would suspect no more than minus 1 strength or plus 1 provision.
I definitely can't think of one reason why Pavko would be so weak compared to Freakshow.
You're still asking the wrong question. But if you must, then you should rephrase it to: Why is Freak Show so strong (compared to Pavko)? Because it's a broken card.
Why was freak show released if it was obviously overpowered. Didn't they say they had a beta test with this faction?
Freak Show had a different ability on the PTR, but it was changed last minute.
There is nothing in SC that synergies well with Pavko. [...]
If Pavko Gale is bad or mediocre why has it stayed in that state for so long?
Because Pavko is a meme card. There is nothing wrong with putting such cards in the game, as long as the faction has decent alternatives.
According to something they said in the beta there was a way to interact with the coins or something like that. But nobody liked it and they took it out.
Because it was a badly designed card, targeted at one specific mechanic. For the same reason, no one plays Lambert: Swordmaster. Maybe there should be a way for the opponent to interact with coins, but not by using a gimmicky card.