Chuck Taylor All Star Cx Exp2 4.5 Men A07199C vs Men's Nova 4: which is safer?

Where these two actually differ

• We flag Azo dyes in canvas and Formaldehyde resin finishing on canvas on the Converse and not on the Merrell.
• We flag Waterproof coating degradation and unknown chemistry and Microparticle shedding from coating wear on the Merrell and not on the Converse.
• The Converse is Canvas upper, rubber sole where the Merrell is Mesh/textile upper with waterproof coating, unspecified, 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 Converse is the one to buy.
• We are less certain about the Merrell grade, at 35% confidence against 72%, because it discloses less.