Personally I’ve never been such a fan of Yossi, while MBD is the premier jewish talent. I never really connected to Yossi’s songs, while MBD really rocks my neshoma. Not even a close call by me.
Additionally, I once met Yossi’s grandson (really interesting guy. Like, really, really, interesting.), and he told me that while his grandfather has worked extensively with MBD, Yossi himself wouldn’t compare himself to the great MBD, saying quote “I couldn’t hold a solitary candle to such an insanely talented artist”. Do with that what you will.