Stunt has flat green lens. longer frown (grey mouth) with 8 holes cut out, two screws on ears + 1 at the bottom, 4 bumps on grey ear section, higher brow
Hero Bubble grey lens, shorter frown with 6 holes, 1 screw on ears + one at the bottom, 3 bumps on grey ears section, low brow.
I can spot ANOVOS helmets a mile away with its inaccuracies, wrong ears, wrong eye section, wrong frown ect... but thats another debate
Mark