I think it's unfortunate that the power of choice isn't as appreciated outside the Python world but I can also relate to people who feel they have to read way too much stuff.
In spite of this, however, Brubeck indeed aims to be a one-stop shop. It uses coroutines + nonblocking I/O to make scaling up easy but it also a web.py style routing system because all of us know this style already.
Choice is great for veterans, but for someone learning Python or Ruby, how do they know what to pick? How to they know that they're not going to bet on a losing horse that stops being actively developed after a while and doesn't do anything for their career. Veterans can afford to play around and test out new frameworks, because they can always fall back to Django or whatever pays the bills, but newbies can't.
They have to do their homework, ask around, and make the best possible guess. And more importantly, focus on the more general skills than the specific framework.
If someone is getting started in a vacuum, they're doing it wrong.
