Agreed.
I can't imagine why the class feature would grant a Fort bonus if that bonus wasn't intended to make the grabs more difficult to break. It makes me think the designers' intent may have been for the AC and Fort bonuses to persist even during a grab.
However, the carefully worded rules make it pretty clear that it doesn't work this way regardless of what they may or may not have intended.
In my opinion, this build has the potential to be very powerful. It's not first-incarnation-of-the-Battlerager broken or anything, but the brawler has the ability to take a move action away from an opponent every turn at worst--or more than once a turn if he gets OAs--and to possibly immobilize as an at-will. It's a (very) poor man's daze, so it doesn't seem out of line to make the player choose between grabbing and getting a bonus to defenses on any given turn--at least it doesn't to me.
But if the player can get around that by simply picking the right weapon...well, I'm less inclined to force him to jump through that particular hoop. Perhaps if spiked gauntlets required a feat to use, I'd feel differently...but they don't.
I can't imagine why the class feature would grant a Fort bonus if that bonus wasn't intended to make the grabs more difficult to break. It makes me think the designers' intent may have been for the AC and Fort bonuses to persist even during a grab.
However, the carefully worded rules make it pretty clear that it doesn't work this way regardless of what they may or may not have intended.
In my opinion, this build has the potential to be very powerful. It's not first-incarnation-of-the-Battlerager broken or anything, but the brawler has the ability to take a move action away from an opponent every turn at worst--or more than once a turn if he gets OAs--and to possibly immobilize as an at-will. It's a (very) poor man's daze, so it doesn't seem out of line to make the player choose between grabbing and getting a bonus to defenses on any given turn--at least it doesn't to me.
But if the player can get around that by simply picking the right weapon...well, I'm less inclined to force him to jump through that particular hoop. Perhaps if spiked gauntlets required a feat to use, I'd feel differently...but they don't.