If you bought bought a Jupiter in June 2013 ($7,131.80) to date you should have made 40+ btc at roughly 510 gh/s avg. I don't know where else in non BTC land that kind of ROI exist for the average person.
Ouch! Is it really that bad? Had you simply bought BTC you'd have 70+ BTC. That's nearly a -50% ROI.
Investing involves more than putting all your resources into one pipeline. While we definitely purchased large amounts of BTC at the time, mining helped offset the long term risk associated with market volatility. Mining provided steady and better predictable results to support the uncertainty therein.
In hindsight it is always easier to say one wishes to purchase at any point in the timeline (preferably prior to 2010).
Return on investment isn't predicated on what you might have made otherwise we would all be at -2000% ROI.
**checked my numbers for BTC again it is 46 BTC