So the AMHash shares will only ever make a profit if difficulty increments stay below ~5%. And, even if they do, the profit will be minimal compared to the cost and only achieved after 6+ months.
I'd love to know where you keep getting info that nobody could possibly know.
Is it astrology?
Dude, it's basic math. Run it through one of the bitcoin mining calculators if you want to check for yourself.
As anyone who has mined knows, calculators are absolutely terrible at predicting ROI.
Historically the best priced hardware has always been able to ROI regardless of how many people "proved" it couldn't using calculators.