So if we had the 20% wall plug efficiency, then we need that 3.2:2 ratio to become 10:2 to hit break-even. That looks like a huge gap but maybe there are tricks

So if we had the 20% wall plug efficiency, then we need that 3.2:2 ratio to become 10:2 to hit break-even. That looks like a huge gap but maybe there are tricks here that resolve this once you get over the initial gap.