Green Dude give your head a shake!
Prophecy is an industrial metals play! Northern is a precious metals play! Two different bets! Prophecy is located in a high risk mining area Northern is not! Prophecy has to remove half a mountain Northern is looking at low grade open pit. I am not sure how you compare the two!..
As far as the NPV it is OK but not fantastic but you must remember it is a PEA which does not mean a whole lot right now long way to go before they can show it to be economic but it is a flyer like any other.
That said if you are a pessimist on economic recovery continuing gold does well industrial metal tank. On the other hand if the recovery continues industrial metals do well and gold may very well tank as I said 2 different bets.