They might have been better than some, but their ports were still pretty sub par. Not really something to be used as an example of a good port. Their better ports like Dark Souls 3 and Sekiro were still pretty bare minimum for a port.

Cant talk about ac6 as Ive never played it.

Dark Souls PTDE was an absolute mess of a port.

The remaster was handled by an entirely different company.

Original launch DS2 suffered mostly from framerate related issues. Including weapon durability being severely affected.

Dark Souls 3 had no real AC and had massive problems with cheating during PVP. In fact I don’t think any of the games had a proper AC aside from a server side check on save files. Which did nothing against any form of cheating that didn’t affect the save file. Cheats that could for a time brick saves though some method I don’t recall.

Elden Ring had major stuttering issues for a considerable amount of time.

All games were found to have a severe RCE issue that lead to them being taken off line for an extended period. ER not affected as I don’t think it was released at the time.

All of them were pretty bare bones, not supporting UW without modding, not supporting arbitrary framerates. Other than original DS2 but that came with its own issues.