Crispi 4-in-1 Portable Glass Air Fryer Cooking System vs 12.5 Quart Air Fryer: which is safer?

Where these two actually differ

• We flag Thermal fracture or stress in glass cooking vessel, Plastic housing off-gassing (VOCs and formaldehyde) and Electrical hazard or heating element degradation on the Ninja and not on the Siemens.
• We flag PTFE fume inhalation (thermal decomposition), Coating degradation and particle ingestion and Non-stick coating off-gassing at normal operating temperatures on the Siemens and not on the Ninja.
• The Ninja is Glass cooking vessel with stainless steel and plastic components where the Siemens is heating element, basket, and internal surfaces, coating unspecified, 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 Ninja is the one to buy.
• We are less certain about the Siemens grade, at 35% confidence against 75%, because it discloses less.