[msandford]

You're right not to trust your intuition! Good call.

It's actually going to be much, much less than that due to the nature of the rocket equation. https://en.wikipedia.org/wiki/Tsiolkovsky_rocket_equation

[msandford]

Given that I'm not wrong as the above link shows (http://aviationweek.com/blog/nasa-cnes-warn-spacex-challenge...) would anyone care to explain to me for a second why I'm getting downvoted?

I'm happy to be less stupid if that's the problem, but I don't know what thing it was that I did that was stupid.