Functional Form Cutting Board Set, 3-Piece vs 48 Flexible Cutting Boards (Set of 2): which is safer?

Where these two actually differ

• We flag Microplastic shedding from cutting action, Bacterial biofilm accumulation in deep cuts, Staining and odor retention and Heat-induced warping or leaching on the Fiskars and not on the Norpro.
• We flag Thermal degradation, Microbial or mold growth in grooves and Degradation and microplastic shedding over time on the Norpro and not on the Fiskars.
• The Fiskars is Polypropylene or similar plastic; no nonstick or waterproof coating disclosed where the Norpro is Flexible plastic or rubber cutting boards, which is most of the difference in these two grades.
• We are less certain about the Norpro grade, at 35% confidence against 72%, because it discloses less.