I understand it just fine, you don't seem to understand basic math. Show your work or you're just making crap up.
There's plenty of projections that show a positive ROI even at 100x difficulty and beyond. I have yet to see a single credible projection that doesn't show a positive ROI at some point within 2 - 3 years with all the worst case scenarios coming into play at the same time .
I trust Organofcorti's calculations far more than I trust your speculation.
Based on past history an April order will be likely delivered in 2014, when difficulty will be very high. Sorry, I'm basing this assumption on facts: continuous delays, huge backlog, etc. Organofcorti's calculations arrive only to July this year, and still you can see below how he forecasted a x10 increase in just three months. If that trends continues.... Well, good luck with having a ROI at 1,000x.
Another fact is that you are not guaranteeing
any delivery date. That's a huge risk in mining business, because as you acknowledged if you don't get your mining unit early enough so you can recoup your costs in the very first weeks, you won't ROI at all. And BTW, if you trust organofcorti's calculations you should know he wrote literally:
Notice that the BFL Single SC at $2500 / 50 Ghps (currently 19.2 btc / 50 Ghps, or 0.38 btc / Ghps) is quite profitable, right up to the end of May. It would need about twenty days mining to pay for itself, and once the 0.38btc / Ghps threshold is reached will return 200% of the purchase cost within the next seventy days. Based on this estimate, if I could be guaranteed delivery by the end of May I'd purchase a BFL Single SC.
Source:
http://organofcorti.blogspot.com.es/2013/04/915-fair-price-for-asic-miner.htmlBut, the point is
you cannot guarantee delivery by the end of May - true? Maybe to him, to try to get some nice publicity, but not for the rest of us.
I am a BFL customer too, so I'm not enjoying this situation.