It's been said so many times now but it really does depend on what season you're talking about. Even if you don't count the pre Zyuranger seasons, Super Sentai for sure has more seasons that are better than Power Rangers but there are some PR seasons that are equal to if not better than their Sentai counterparts. For instance, I find MMPR season 1, In Space, Wild Force and RPM better than their Sentai seasons. I find Lightspeed Rescue, Time Force, SPD and Jungle Fury to be equal to their Sentai counterparts. I've not seen Ohranger, Gingaman, Dino Fury and Ninja Steel so I can't say anything about those seasons in terms of comparison. Every other PR season that I didn't list, their Sentai counterparts are better so Dairanger, Kakuranger, Carranger, Hurricanger, Abaranger, Magiranger, Boukenger, Shinkenger, Goseiger, Gokaiger and Go-Busters are better than their PR counterparts.