Build Strong is a "diary" style track w/ a crying type of delivery, it is introspective but in a way that really calls attention to itself to the point it comes off like he's aware he's making "the introspective joint" as opposed to all the other joints where he isn't. Also his raw delivery works for him a lot of the time but other times, it feels theatrical. He's pushing the limits of his range on that track and it feels a little forced tbh. It comes off like him doing his best Ghostface impression.
DOOM in general doesn't stretch his delivery in that type of way so yeah it's fair to say he has a smaller range than RZA vocally. However, DOOM executes way better as a writer and has more social commentary & self reflection - what most people would call gems - in any given bar than RZA does. DOOM has throwaway verses and trash albums too but since we're talking about peaks, on his best work the lyricism is more effortless and wittier and the insights are more frequent, and he's juggling more wordplay and punchlines while he's doing it.
Since your the only person taking this seriously somwill i
Ill give you wordplay and the hidden meaning gems and shyt 100%. Ill give you flow even most the time even if doom keeps it simple it works. Doom tends to put more into his songs especially once rza became wealthy he phoned it in some.
But doom is also laid back on every track and rarely moves out of a spce that rza moves in and out of with ease. Rza doss hrscore rap. Rnb. Splits styles like noone. Can do laid back joints. Rock joints. Osts. Electronic stuff. Can spit with passion. Doom rarely steps out his space at all. (Flow/delivery wise. Hell rap over anything)
Rza is more a andre 3000 style poet rapper to dooms pure mc imo. But rza has also done that multi style seen on impossible and others. Rza is easier to understand marble mouf aside which you can either take as good or bad. Rza can get highly descriptive and take you there (whats going on, diary of a madman, domestic violence) where as doom has a tendency to wander with his thoughts even while telling a story which works in its own cool way. Different
Doom is 100% more consistent over time and bis solos > rzas. Rza takes WAAAAAY more risks. Doom knew what he did best and stuck to it. Rza tries to be too many things sometimes. Too lyrical. Fit too many words. It is not as smooth as dooms because doom will change subject and then bring it back somewhere else.
I just think itd ridiculous to say doom blows peak rza out the water. He blows bobby dofital out the water. Not the rza.
What rza lacks as a rapper he makes up as a producer and visa versa for doom but even as rappers i think its close.
So did doom apparently cause he wanted to work with him early on.
Oh and obviously i kid doom fans. Hes one of my fav rappers ever. But so is the rza.