Are Heavy Handed and Wallop passives a good idea?

Hi. They provide bonuses to critical, stunned and vulnerable damage. But the bonuses aren’t big. Are they worth spending multiple skill points? Or can I get exactly the same benefit from my gear and paragon? They both display an [x] in the advanced tooltip, which makes me suspect they work differently from the typical +% to crit or vuln you get from gear/paragon.

And how about stunned? I know that damage type is already way weaker than crit and vuln.

Thanks for your time.