When does pirate warriors 4 go on sale

There's no way to know what's gping on sale until it's announced.

To only use US sales these days is ludacris. US sales while a huge part of gaming sales it's not even half of the world market anymore. It's like movies. Sure the Hangover 2 is going to do better than Pirates 4 in US and maybe that makes Pirates 4 look bad
but if you include worldwide sales Pirates 4 is kicking Hangover 2's butt. Hangover 2 worldwide $436 mil Pirates 4 $907 mil. Also the 360 had a full year head start. It sold 7 million units worldwide before the PS3 came out. Right now it's less than 4 million
ahead. So if you do the math since both were on the market at the same time the PS3 has outsold the 360. The US isn't everything anymore. If you're only looking at US sales you might as well not bother keeping track at all.

i shouldn't have to buy it again just because they made a windows version

One Piece Pirate Warriors 2 is damn good. Shame Xbox missed out on it.

Hey - I had the same issue. Fix was to sign out of Xbox game pass. After, launch the game, it will prompt you to log in. Log in with your account and it should work. Good luck!