This has no gameplay effect, just curious

Overview screen has option middle bottom left, in the option it shows your current number of profitable raids

I was under the assumption that a profitable raid was one where the resources gained are greater then the resources spent.  using metal 1, mineral 2, ves 4 as a guide

So technically say you send 1 vessel raiding and it cost you 1 res to do it, then if you get 2 res from the raid, its profitable

Apparently this is not the case, is there a min value, or something other than the above determining what is/is not a profitable raid