At least for one player difficulty for me.
For my Trapsin, I have to dump all the points to fire blast and synergies, where for my Bladesin, I maxed out Death Sentry, and there is still points left. Physical immunes are far less than lightning immunes, and easier to break with reapers toll in my merc’s hand. At the end of the day, I got a much larger radius death sentry with the Bladesin, and far quicker first corpse generation.