Re: One Quick Post vs Jet QuickPress
Contrast does not make sense 
The plugin is really a further development BPQP (for which the author BPQP thank you very much!).
The idea – to use the engine WP for publication, but for the interface to your post.
As for compatibility with conventional (non-MU) WP – it will be ensured.
ps: plugins I created for my projects and sometimes develop at the request of those who use them:)
