It is confusing, but it does appear correct (not having independently verified the underlying numbers regarding BTC-equivalent raised and BTC value of the included assets).  But taking those numbers at face value, TOKEN holders should directly own 70% of UNITY.  So you divide the tokens purchased (571k) by 70% and get 816k total UNITY issuance.

I think the distinction between that and multiplying by 130% was the first big confusion.  The second is the non-dilutive nature of the 20% (10% working capital and 10% held in reserve for potential bonus to James).  This is UNITY that UNITY itself owns.  The working capital portion will become dilutive only as it gets spent (if it gets spent) as currency, in lieu of spending out of the cash raised.  It's somewhat like authorized, but not issued, stock.  The James bonus only becomes dilutive if/when it is awarded, which is a nice problem to have.

Also, regarding the buywall - people should view this both as a courtesy backstop (it shouldn't need to be there if the market is anywhere close to efficient, but it gives peace of mind, and a guaranteed opportunity to cash out if someone really needs liquidity) and as an additional opportunity for those who plan to hold long-term.  Just as companies will buy back their own stock when they feel it is undervalued, you don't want your "company" to always be trying to buy back shares at the fair market price.  If there are temporary market disruptions, or occasional panic sells, UNITY buying back its own shares at a discount is accretive to you the UNITY holder.  It increases your percentage ownership at a favorable price.