2. This is a model and has absolutely nothing to do with proper OTG due diligence or expert digging into specific items of the respective filings. A stock like LFT would have scored nicely green with this model, but that doesn't devalue the model.
Assessing risks is always tricky. I like to compare this to credit risks for countries. The risks for Greece are now very high, much higher than for some African countries, like Botswana. That was very different a few years ago, but generally the risks for the average E.U. country are still much lower than those for the average sub-Saharan African country.