LFAJ, there are alternative views re wet being contaminated or not.
Dispatch 'wet' could be considered differently from landing ‘wet’, due to the different data source / assumptions, particularly where the latter is published within a table of braking actions including all contaminants.
An interesting note from the previous ICAO document.
“c) Wet runway: A runway that is neither dry nor contaminated.
Note 1. — In certain situations, it may be appropriate to consider the runway contaminated even when it does not meet the above definition. For example, if less than 25 per cent of the runway surface area is covered with water, slush, snow or ice, but it is located where rotation or lift-off will occur, or during the high speed part of the take-off roll, the effect will be far more significant than if it were encountered early in take-off while at low speed. In this situation, the runway ['wet'] should be considered to be contaminated.”