I guess Roc Nation is comparable to YMCMB.
Pretty much. You look at the artists that are either signed or managed by Roc Nation that aren't Jay-Z and Rihanna.
J. Cole - No promotion, created his own buzz and went major because of it.
Rita Ora - She actually gets promotion but no one in America cares about her music, but I heard she's big in Europe.
Jay Electronica - When's the last time he released a song? Don't worry, I'll wait...
Willow Smith - One-hit wonder.
Shakira - Has-been.
Casey Veggies - Underground for life.
M.I.A. - Has she released a song since Paper Planes back in '08?
Melanie Fiona - Gets little to no promotion.
Meek Mill & Wale - Most people don't even know they're managed by Roc Nation. If it wasn't for Rick Ross, they'd both be flops. With all due respect to both of them, no one was checking for them before MMG started making albums. Wale was a flop and Meek was an irrelevant underground artist.