Sure enough, when I plugged in your assumptions, I got a valuation per share more like $288 than my $65. So it is all about the sales and profitability assumptions. I just think it is more likely it takes much longer, with more hiccups. Those differences produce a very different valuation.
Good discussion.
This is what I meant by valuation does not matter. The assumptions being made change the valuation drastically. Therefore the bigger question is whose assumptions are correct.