I can somewhat agree with this statement if we strictly start from 2006, which is the beginning of Rozay's career, but if we do that, and go by this criteria, Kanye has been more consistent than both of them- Graduation, 808s(hate it or love it), and MBDTF trump all Ross' releases in every single category....and we can throw WTT in there too
Kanye went Euro/Techno/Electro with that "808" disaster and he was on that Euro ish with WTT....MBDTF was a masterpiece tho'.
Rozay came in the game in 2006 and he's dropped 5 solid albums in a row all critically acclaimed in addition to dropping Self Made Vol 1 & 2 that were both solid and got heavy burn.
That's 7 projects without a "808"'s or a "Relapse" or a "Rebirth" or a "Kingdom Come", or an "I Am" or a "Tm103".
JayZ admits his own inconsistency and Young Guru even shared that opinion and he should know better than anyone but Kanye's "808'"s bumps him out the argument.