With the release of the Weapon Master's Handbook, having 'weapon training' as a class feature, is a LOT more relevant now.
According to http://paizo.com/paizo/faq/v5748nruor1fm#v5748eaic9qto archetypes, while a Dragoon's Spear Training counts as Weapon Training, thus allowing them to take Advanced Weapon Training with the feats, an Archer's Expert Archer and a Brawler's Close Combatant does not.
This deprives them completely of access to Advanced Weapon Training due to slightly different wording, despite the abilities themselves being otherwise functionally identical.
Is this the sort of thing that could be fixed or revised, or is this, for whatever odd reason, intended?