I watch the video of Xbrick recently, I don't know if it was an official video or not. But I was impressed by how the person talk and explain the video in just couple of minutes. The video clearly elaborate how does Xbrick exchange works. Aside from saying that this is a decentralized exchange, what do we expect in Xbrick?
Their tagline is world class/first class/first tier cryptocurrency exchange. Based on their whitepaper, they will be the fastest, most secure and most reliable as well as user friendly and much much more advanced. As for the coin, let's wait for the token sale to end and see if their plans on the whitepaper regarding it will flourish.
Your doubt is understable Shochusan.
But let us remember that their tagline of "world class" simply means "undisputed", "undeniably" and "note worthy" for many.
But instead of merely casting doubts, why have a look at this thread to understand more of how one could understand the theory behind this trading.