There many factors like genetics
some just more restistens like others, depens on terps, flavonoide
and other chemical components. The amount of spores in the air
or even the structure of the bud (flufffy/compact)
I would say, its pretty hard to tell how high the chances are at all
I told you already 20days ago that humidity will probably be a problem
since the picture 3 weeks ago already showed 78% over your lamp