Thieves Guild Power Builds are different than the builds you will find elsewhere. Each build is directed specifically at the campaign in question. It’s not a generic build; it’s not aimed at PvP; it’s not a hangover from the OC. SoZ TGPBs are made for SoZ, OC builds for the OC, etc.
Another thing that will differentiate TGPBs from others is that reasons will be given for the key elements of all the builds, which will be bolded in the build description.