You don't get tight corner braking on a CX-5. It decouples the drive to the rear axle proportional to the steering lock.
There is tight corner braking due to the AWD, I have felt it many times. The AWD system does consider steering wheel angle when deciding how much f/r coupling force to apply but it doesn't automatically disconnect the rear wheels simply because you are taking a 25 mph corner at 50 mph. In this situation the steering wheel angle is nowhere near full lock and as the wheel speed sensors detect wheel speeds/steering angle that indicates some wheels are scuffing it will engage the AWD coupling which is what causes a mild braking force. Of course a FWD CX-5 would detect the same wheel scuffing but it would apply front or rear braking on individual wheels as appropriate.