BECAUSE THEY ARE DPS JOBS (in the case of SMN, DNC, and RPR) and in the case of WAR, they have a comparable amount of dps buttons when you consider their combos aren't choices or interesting. WAR's overall rotation is mostly similar to WHM's given that constraint, in fact, as I've shown before:
Heavy Swing-Maim-Storm's Path: Glare
-Storm's Eye: Dia
Overpower/Mithril Tempest: Holy
Upheval/Orogeny: Assize
Inner Release: Presence of Mind
Infuriate: Thin Air (or Swiftcast)
Fell Cleave: Solace/Rapture
Primal Rend: Misery
I'm just gonna go from here.
Thin Air isn't a DPS button.
Assize isn't a DPS button.
Solace isn't a DPS button.
Rapture isn't a DPS button.
I don't know why you put in Infuriate/Inner Release because I wouldn't count them as DPS buttons (since they don't do damage) and same applies to the WHM equivilants.
Heavy Swing/Maim/Storm's Path are THREE buttons not 1 last I check and also make a 1-2-4 combo with Storm's Eye.
WHM's DPS buttons are:
Glare, Dia, Holy, Misery, and (debatably) Assize.
WAR's:
Heavy Swing, Maim, Storm's Path, Overpower, Mithril Tempest, Upheaval, Orogeny, Decimate, Chaotic Cyclone, Primal Rend, Inner Chaos, Fell Cleave.
I'll even go a step further and do this for WAR: HS/Maim/SP = 1 button, Overpower/MT = 1 button and combine some that are one or the other like Fell Cleave/Decimate (1) and Orogeny/Upheaval (1).
Even with that and options only accessible when you're under a certain buff, WAR still has more DPS buttons than WHM. WHM can stand to get more.