MV and JS:
Nope, sorry. The spreadsheet you remember is not Vick and Josh's Gear Decision Matrix. The GDM is a very powerful tool, and you may want to look at it. It will make your spreadsheet less "fragile".
I remember the one MV is referring to but I can't find it either.
The gear decision matrix Josh and I did is not as 'automatic' as the one we remember. But in the final analysis, it may give you better information that is *transparent.* That is, you will know and understand where it came from and you won't have to worry whether the underlying assumptions in the formulas are correct or applicable. So give the gear decision matrix a try. It will not generate a gear list, but gear lists are easy (despite all the agony expended on the contest). Plug your results into any of the simpler lists provided in the contest. I think you will like playing with the GDM.
The decision matrix lets you decide what is important in any gear decision, then it lets you rate each item you are comparing according to what you think is important. You can rate items by objective criteria with solid numbers attached or you can rate them by your subjective impressions. Or both.
So, for example, you want to decide what bivy to buy and whether there is any advantage to using a bivy at all. Or you want to decide what kind of fuel to use or sleeping bag versus quilt or which headlamp will meet your needs. Or you are in a group that needs some shared gear such as a 4-man tent and cooking gear, and you need to be able to reach a group decision about what to buy. These are the kinds of questions the gear decision matrix can resolve. It seems simple, but it is a very powerful tool used in lots of difficult fields to take some of the guesswork out of decision making.