World Art Hot Cups 4oz vs Compostable Hot/Cold Cups: which is safer?

Where these two actually differ

• We flag PLA monomer leaching (lactic acid/oligomers), Compostability claims vs. actual infrastructure, Coating degradation and exposure over time and Mold or bacterial growth in wet storage on the Eco-Products and not on the Starbucks.
• We flag Undisclosed waterproofing layer (likely fluorinated compounds), PLA (polylactic acid) degradation under heat stress, Coating leachates into beverages (unspecified) and Microplastics from coating degradation on the Starbucks and not on the Eco-Products.
• The Eco-Products is Plant-based compostable PLA coating where the Starbucks is Plant-based fiber coating (PLA-lined) with unspecified waterproofing layer, which is most of the difference in these two grades.
• The gap is 45 points, wide enough that this is not a close call, and the Eco-Products is the one to buy.
• We are less certain about the Starbucks grade, at 35% confidence against 78%, because it discloses less.