memo and independent valuation, page-7

Risk Component Chance
I've copied and pasted the risking associated with the braveheart and artemis prospect used in the independent GEO report below:

Geological Probability of Success of Artemis Prospect
Trap 50%
Charge 70%
Reservoir 60%
Seal 60%
Geological Probability of Success 13%

Chance of Success of Braveheart Prospect
Trap 70%
Charge 90%
Reservoir 72%
Seal 27%
Geological Probability of Success #12%
# Geological Probability of Success of particular hydrocarbon phase is 6% gas and 6% oil

Now what i find really strange is that they've used higher percentages associated with Braveheart than Artemis (other than the seal) and excluded the DHI De-Risking Multiplier of 1.6... Hopefully someone with good geo skills can explain to me how they have got to such conclusions...?