I'm not a financial analyst. If there is anything wrong with the...

I'm not a financial analyst.
If there is anything wrong with the financial projections then this should be very obvious to the brokers. This is their bread and butter. I put more faith in their ability to crunch numbers given to them than understand technical stuff.
It is worth remembering that the new CEO would have put this together/checked it. He has a masters in mining finance and a MBA.

The answer to your query may lie with understanding what "real constant basis" means. Can't help I'm afraid.

It is interesting that RWD talks about project life v mine life. I missed this initially. I don't see a distinction in the AMN PFS.