I too wondered about the wisdom of breaking "harder" in the wet given that as you rightly say you are selecting a rate of deceleration.
I concluded that if the anti -skid system is operating as per the brochure the less time you spend at high speed with all that lift on the wings the better.On balance I'd rather be doing 40kts on a flooded runway than 100 kts and the sooner I can safely do that after landing the better-sod the brake life!. Just my humble opinion.