I know this thread is mainly about money, but aside from the dollars and cents of the issue, which publishing route will likely get you more of an audience, self/e-publishing or traditional? Given the choice between making a ton of money and having my books be widely known and liked, I'd go for the second.
Inter Lineas Legite
On a slightly unrelated note, I just read an article titled "25 Self-published Authors to Watch".
Your name came in at #6 and in a list of some esteemed/high selling company (Hocking, Locke, Konrath rated just above you).
"What lasts in the reader's mind is not the phrase but the effect the phrase created: laughter, tears, pain, joy. If the phrase is not affecting the reader, what's it doing there? Make it do its job or cut it without mercy or remorse."
- ISAAC ASIMOV
The mathematician part of me is screaming to say "WELL DONE!" with the original post. Excellent points to consider, and written like a lawyer in clearly stating what you are and are not saying. Writing a winning argument with little to no faults is mathematics enough, but then you used NUMBERS too! *gasp*!!
Sorry, but as someone that has to apologize for my day job when I am introduced to people (math instructor), it is nice to see mathematics put to use in a writer's forum!
Here are the pros and cons I've found by researching traditional versus self publishing.
Advertising is done by professional agents.
The publisher generally already has contract or agreement with certain book stores to get your book on shelves.
Professional artists design cover art and any other illustrations.
All money from sales goes directly to you.
You have a firm, constant hand in marketing and advertising.
You can design the illustrations yourself.
You only get a percent of roytalies, percent varies by publisher.
Parts you like in your book might be edited out to fit publisher's standards.
Marketing, Advertising falls hard on your lap.
You must talk to managers/owners of book stores to put your book on shelves if you don't go by e-book.
I'm sure there's more but right now I'm quadruple tasking.