PETG falls in the middle between acrylic and polycarbonate in terms of strength.  It is much stronger than acrylic but not as strong as polycarbonate  (acrylic is 17 x stronger than glass, PETG is 70x stronger than glass and polycarbonate is 200x stronger than glass).
The stand out points for PETG are its safety to use with food - having FDA approval -  and ease of use.  PETG is much easier to work / fabricate with (both DIY and professionally) than polycarbonate.