The main difference we've seen so far is that the creatures that the Sage created from the Juubi share characteristics with real animals and can talk. Considering we don't know the origins of the Juubi, it would make sense that it has little in common with the creatures that were made from it.
His clone went sage mode , that page in that manga where it shows a black panel with dark sheres that's him sensing in SM and that's what he sees in infinite amount of nature chakra where there in it folds on it's self which is why it shows a mirror image of what's going on , look at it again.