You know that for most time Ljubo plays not his best this part opf season. He had a couple of bad loses in Canada and Cinci masters years ago.
So i think that he won mostly because Levine and Ram are basically challenger level players (=level behind him)
And his performance is not good
Perhaps, but he's been out for a while and played only a clay tournament in Umag since. If he gets to MD, he'll have at least four matches played.