Are the $10 "rugged defender style cases" found online actually as protective for drops as the $80 actual Otterbox Defender branded case? I really wonder, seem

Are the $10 "rugged defender style cases" found online actually as protective for drops as the $80 actual Otterbox Defender branded case? I really wonder, seems like maybe, and might be worth looking into. If so, that would be fantastic and would make the case round to 2 orders of magnitude less costly than the device, instead of just 1.