I quit part way through after a the second scenario - the graphics are not too clear, generally if the winds are that light (I am used to 20kts as a typical), the spread on the temp/dew point so big, the cloud that high I am happy to fly.
If it was to test decision making I would have thought a track of three hours of metars and a TAF with a "go no go" would have been a more precise way to gauge decision making.
Would be intereting to see the spread based on total hours of the participants - would it show the fabled over-confidence in the 250-350 hour range.
Using the Internet and site like this to select while maybe generating a larger number of participants will of course tend toward a self selecting sample which could/should slew results for a number of reasons which would compromise any statistical analysis.