Not exactly. Although, it is a startup submission directory similar to BetaList, but it has a lot more things than the former. Right now, we just released a minimal version. There are many things planned for coming months.
More to my previous answer: The fundamental difference between StartupBase & BetaList is that the former focuses on startups which are either LIVE or are in public beta, whereas the later only allows startups which are in private beta and not live yet.
Yep, looks like they completely ripped of our design, including some content. They possibly scraped much of our content too which I'm looking into right now. (we incurred very high CDN fees because of this)
As for BetaList allow allowing pre-launching startups, that's a policy we're about to change since many startups skip the pre-launch phase and launch an MVP on day one.