Revenged Sevenfold scales with int, but lacks a enhance attribute and relies more so on skill lvl + high enemy dmg to be good. It’s fine for str builds.
Ein sof’s hp buff is insanely good for any cleric build, keep in mind it improves base health healing as well.
Merkabah seems only useful for int builds tbh, at least until you can ride the darn things.
delevel effects seems to marginal to be of use, and the number skills will likely be better at higher kabbalist ranks.
tl/dr: Kabbalist is a decent all round option for any stat build, but it’s not as amazing as PD.