what I posted was not a rule, but a guide.
there are no rules as to how many fish your tank can support.
Either of our guides are very accurate, because you have to take into account the waste produced by fish, not the size of it ;)
If yours is proven to work so is mine, atleast 30,000 people on another forum i post on use my method as a guide, and havent had any problems, the thing is, there is no proven way on how to acceptably stock a tank, ive been up to 4 inches per gallon before, but you have to take into account how much nitrate is left over at the end of the process.
As long as the fish have enough space to swim, the nitrates are easy to keep on top of (although this isn't normally a problem as levels into the hundreds are safe) you have no problems what so ever!