I think OP probably misspoke in using the word lesser. I'm assuming that is probably due to his unfamiliarity with our non-Chalcedonian brethren and sisters. That being said, I think the original question is an interesting one. We often limit the differences to Chalcedon, but what of other issues like those raised? I would imagine that they are more in line with EO regarding things like purgatory, original sin, the filioque, while perhaps not accepting things like the toll-houses.