Heavy Duty NonStick Reusable BBQ Grill Mat vs Tool Mat: which is safer?

Where these two actually differ

• We flag PTFE fume risk (thermal degradation), Coating degradation and particle release, Substrate leaching at high temperature and Microplastic or coating fragment ingestion on the Eco By Naty and not on the Weber.
• We flag Silicone degradation at extreme heat and Off-gassing of volatile organic compounds (VOCs) on the Weber and not on the Eco By Naty.
• The Eco By Naty is Nonstick coating composition not disclosed; marketed as 'reusable' where the Weber is Silicone mat or rubber composite, which is most of the difference in these two grades.
• The gap is 60 points, wide enough that this is not a close call, and the Weber is the one to buy.
• We are less certain about the Eco By Naty grade, at 35% confidence against 72%, because it discloses less.