Well a lot of those numbers are pure theory only a few mobs few spells really had meva nailed down and I believe the C thing was more for players... given that back at those levels it wasn't exactly easy to land spells on EMs naked from what I remember I think it was probably a tad higher. Iirc the one they did nail down was 77 qiqirn and then only to stone I at around 290 which is more like A+. Though at low levels there isn't much of a difference but a 60 would be more like 203 then. And on top of those elemental resistances there was supposed to be specific effect resistances (not counting the resist traits) some spells seeming to have some innate greater accuracy against most things or much lower etc. So what their exact meva to those effects would be would be a tad trickier to determine would probably need an actual test.

Anyways full 119 can mean a lot of things right now. Like for example if you meant ilvl swd and say full reforged af+1 that would only be 188 macc skill and 18 macc. Assuming macc skill ~macc then that would be about 206 macc which if they spell and debuff had 0 macc nerf on it and the mob didn't have some kind of resistance to that and didn't have slightly higher resist than hit rate would be about 53%... you observed 10% but with that sample size the confidence interval is kinda huge to the point that the actual rate could've been in the low 20s. So all it would take is any one of those factors to up the mobs meva or lower your macc by about 40 which in the grand scheme of things isn't huge to the point if we go a decent bit lower we should be fine

So on that note I went out to try it myself since all I really can remember is testimonials from other blus saying it's easy to land on low level stuff and you are saying it isn't. So 191 macc skill plus another 80 macc I had lying around on some really low lvl stuff (like 30-40) in Zi'tah (which is why I didn't use Tourbillion since it kept one shotting them) 20/20 landed for full duration so doesn't look like a low proc rate to me sounds like just really bad macc that should be fixable with this update

Either way we shall see in a couple of weeks.