Unless the good tools consist of wrong information themselves. Which is usually the case. Since his goodtools als closed source and he is the single maintainer of everything the day will come when there are no updates anymore. wink
And since nobody has his sources what is confirmed by who, when, how, you would have to restart collecting info, redumping every game to see if it matches and and and...

I will partially quote bootgods post from the no-intro boards to demonstrate how inaccurate the goodtools (goodnes in this case) are:
Originally Posted By bootgod
Ok on to the good stuff. Note that I was using the latest goodnes to come up with the following things, in the future I will switch over to using BigFred's dats to make things easier.

The following changes need to be made regarding revisions:
4 Nin Uchi Mahjong (J).nes is RevA
Dragon Quest III (J).nes was marked RevA on back, but has v0 ROM (so leave alone I guess)
Dragon Quest IV (J).nes is RevA
Family Mahjong II - Shanghai heno Michi (J).nes appears to be RevA
Mach Rider (U) [h1].nes is RevA
Super Mario Bros. 3 (J) (PRG0).nes is RevA
Toukyou Pachi Slot Adventure (J) [!].nes is RevA
Tetris (J) [a1].nes is RevA

These have various incorrect goodnes tags that need to be fixed:
Digital Devil Monogatari - Megami Tensei II (J) [b1].nes is not bad [!]
Door Door (J) (FDS Hack).nes is not hack [!]
Dragon Ball 3 - Gokuu Den (J) [a1].nes should be moved to [!] for now
Famicom Jump - Eiyuu Retsuden (J) [f1].nes is not fixed [!]
Lode Runner (J) [b2].nes is not bad [!]
Ninja Jajamaru Kun (J) [t1].nes is not trained [!]
Raid on Bungeling Bay (J) [a1].nes should be moved to [!] for now

I'm not going to bother listing all the games that need to be upgraded to [!]

The following games are incorrectly "fixed" by the goodnes fixnes option (see the DB for correct values):
iNES Header Fixes - [--F---] -> Barcode World (J).nes.new.nes
iNES Header Fixes - [--F---] -> Digital Devil Monogatari - Megami Tensei II (J) [b1].nes.new.nes
iNES Header Fixes - [--F---] -> Door Door (J) (FDS Hack).nes.new.nes
iNES Header Fixes - [--F---] -> Family Boxing (J).nes.new.nes
iNES Header Fixes - [--F---] -> Famista '90 (J).nes.new.nes
iNES Header Fixes - [--F---] -> Famista '91 (J).nes.new.nes
iNES Header Fixes - [--F---] -> Famista '93 (J).nes.new.nes
iNES Header Fixes - [--F---] -> Final Lap (J).nes.new.nes
iNES Header Fixes - [--F---] -> Jajamaru Ninpou Chou (J) [!].nes.new.nes
iNES Header Fixes - [--F---] -> Kaijuu Monogatari (J).nes.new.nes
iNES Header Fixes - [--F---] -> Lasa-r Ishii no Childs Quest (J).nes.new.nes
iNES Header Fixes - [--F---] -> Metro-Cross (J).nes.new.nes
iNES Header Fixes - [--F---] -> Ninjara Hoi! (J).nes.new.nes
iNES Header Fixes - [--F---] -> Pro Yakyuu - Family Stadium '87 (J).nes.new.nes
iNES Header Fixes - [--F---] -> Pro Yakyuu - Family Stadium (J).nes.new.nes
iNES Header Fixes - [--F---] -> SD Gundam - Gachapon Senshi 2 - Capsule Senki (J).nes.new.nes
iNES Header Fixes - [--F---] -> SD Gundam - Gachapon Senshi 3 - Eiyuu Senki (J).nes.new.nes
iNES Header Fixes - [--F---] -> SD Gundam - Gachapon Senshi 4 - NewType Story (J).nes.new.nes
iNES Header Fixes - [--F---] -> Shin 4 Nin Uchi Mahjong - Yakuman Tengoku (J).nes.new.nes
iNES Header Fixes - [--F---] -> Sky Kid (J).nes.new.nes
iNES Header Fixes - [--F---] -> Tanigawa Kouji no Shougi Shinan 2 (J).nes.new.nes
iNES Header Fixes - [--F---] -> Tetris (J) [a1].nes.new.nes


PS: Some Trivia why those tools are named "goodxxx": Cowerings first tool was for the NES and he pondered about naming it "GoodNES" or "NESCafe". He chose the first and named all his other tools subsequently with "good" ;-)