I have a Snakebite Striker who is about to hit level 7, and the levels listed in the Snake Feint ability do not match when brawler abilities are given up.
You gain:
3rd - can move as part of standard action to feint
11th - count an extra square for flanking
15th - count another extra square for flanking
You lose
3rd - maneuver training 1
7th - maneuver training 2
This means that the brawler gets no new abilities at 7th level, but two at both 11th (this plus Opportunist) and 15th (this plus Maneuver Training). I've seen few archetypes that do not replace abilities on a one-for-one basis. Was this intentional, or is there errata to make things match up better?