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In general, it would be more ethical to confirm your calculations yourself, rather than saying "I calculated it, you disprove it." I tested it. The test was as follows:
An attacking hero with 6 stacks of 5 Rust Dragons each.
3. Most likely the numbers provided by AmberSoler are correct.
I know, I'm guilty, I've never been good with the map editor, and I only play Heroes on Wine (I find the theoretical version easier). The test isn't very conclusive... It needs several dozen repetitions (or was it?).
Previously, it was claimed that 10 couldn't defeat 3 – now are we talking about _2_?
Regarding point 3: Now compare the tables, aren't you surprised that the numbers match? The one I provided was built based on the hypothesis of a binomial distribution (model: cows approach one by one, breathe their 10%, the total is the sum of the breaths).