Autobrakes are for wheel braking only and the reversers are a separate system. Reversers are far more effective at higher airspeed and especially in poor braking conditions. If the reversers weren't used the pilot gave up his most effective system for slowing the aircraft immediately after landing. The slower you get, the more effective the wheel brakes are.
The best part of FR is how quickly one can get clarifications on stories.
It is hard to imagine how reporters get to keep their jobs when they report only 1/10 of every story.
Thanks.