The pawn strings will change based on the chosen strategy and your talents. They won’t change every time you change a piece of gear. There is a long history of how we have generated and used stat weights on AMR… short version is that getting new stat weights every time you change a piece of gear is not a very good way to rank gear. We stopped using that approach about 6 years ago.
At that time we moved to a much better way of generating stat weights – those are what you see in the pawn string.now. It gives a better set of weights, and they are more stable. Then we moved away from stat weights entirely a few years ago because no matter how good your stat weights are, they are still not a very good way to rank gear. Using Best in Bags is far more accurate and flexible. If you use the import/export from/to our in-game addon, it’s also very convenient.
Pawn can still be convenient as well, but only in situations where you aren’t that worried about performance, such as sorting through gear on a low-level character or while leveling up.