What they are doing with the 57s with AII magnets is trying to duplicate the tone from a "vintage" or older guitar that the magnets have weakened a bit giving you a more mellow tone. Fender has done it with their Classic Vibe series using A3 magnets in there 50s series. A lot of guys really like it because it reminds them of older 60s guitars they have heard.
If you look on the Gibson site they have a graph showing the relative pickup output for all of their pickups. You will see where the 57s come in compared to other Gibson pickups. If you are looking at GFS you should try to match the output of the 57s say around 7 to 8k ohms, neck and bridge respectively.
http://www.gibson.com/en-us/Division...ade%20%281%29/
The Blues is alright!
Guitars: 1968 Gibson SG, 2005 Gibson SG Standard, 2006 Gibson LP Classic Gold top, 2004 Epiphone Elitist LP Custom, 1996 Gibson Les Paul Standard. 2001 Epiphone Sheraton II, 2007 Epiphone G400.
Fender Strats: 1996 Fender 68 Reissue CIJ, 2008 Squier CV 50s, 2009 Squier CV 50s Tele Butterescotch Blonde
Amps: Blues Junior Special edition Jensen in Brown Tolex with Wheat front, 65 Deluxe Reverb reissue,1970 Sonax reverb by Traynor, Avatar Custom 2/12 Cabinet with Eminence Legend V1216 speakers,
2008 DSL100 Marshall Amp , Fender Super Champ XD,Fender Vibro Champ XD
Effects and Pedals: Fulltone Fulldrive II, Fulltone OCD, Fulltone Mini Deja Vibe, Fulltone Fat Boost, Dunlop Crybaby Wah, Boss DS1, Boss DD20 Giga Delay, Boss TU2 tuner, Boss BD2, Ibanez TS9 Tube screamer, Zoom 505. Radial tonebone hot british.