If you tracked your TPA honestly and for several weeks, a .750 average is pretty good. .900 is world class playing, an 800 Fargo player would shoot a .900 or a bit higher over a match. A pro player having a bad day would shoot .750, that would be about an A level player.
Since we know the TPA of top players and we know the Fargo rating of those players, there is a co-relation between them that can be made even though they track different things. It's impossible to play bad and win against good players, so a high TPA = a high Fargo rating. From seat of the pants thinking, if you subtract roughly 75-125 points from the TPA rating you would be around where the Fargo rating is, with a smaller number going to higher rated players and the 125 points for lower rated players. So someone that shoots a .500 TPA over a match, which is about half misses and mistakes vs balls pocketed, is a 375-400 Fargo, a pro that can play at a .900+ speed would be about an 800-820 Fargo.