"...failed to decelerate as quickly as it should have and actually picked up speed slightly for a brief period. Even after maximum manual braking was applied."
"I think they want to question the veracity of their FDR data."
Anybody who has ever hydroplaned, whether in a car or an airplane, knows that indeed acceleration does take place at that moment. And anybody who thinks that isn't so and that claiming so invalidates the WSJ article apparently isn't a pilot. Or a very experienced one.