stack = 10, product = 5, team = 2.5
If you have worked on a team that your potential employer knows someone on increase value of team by 10
If you have worked on a product in the same problem space as potential employer increase value of product by 10 - as in employer is making big banking solutions you have worked on big banking solutions.
if you parts of the stack are hard to find and you have demonstrated expertise in those parts increase value of stack by 20
If you have led a team increase value of team by 5
If you have led a team in same problem domain as potential employer increase value of team by 10 and value of product by 20.
If you have led a team with essentially same stack increase value of team by 20 and stack by 10.
led team same stack same problem domain increase team 30 product 30 stack 10.
and so on and so forth, other significant effects achieved by working on directly competing product, having worked in government standards that the product is dependent on etc.
on edit: demonstrated expertise is not just passing coding test, I mean like meaningful writing, speaking at conferences, standards work, additions to the language, a widely used library.
on second edit: of course values imprecise but just to establish that there is no set rule as to which is more valuable.
