I’d like to think that white damage has the same hit probability as mashing hamstring or shield bash, but in practice even on green mobs, skills like that fail a comically high % of the time. Many fights I have to mash upwards of 5 hamstrings in order for one to stick. And again, that is on green mobs, often 6-7 levels below me.
TLDR, I am convinced that skills have a higher miss rate than white attacks.