Nice concept – but unfortunstely I found it to be incorrect in all of the examples I tried with my Mac.

It'd also need to be much more precise in hardware specs and cover a lot more models and their variants to be actually useful.

Grading the compatibilty is also an absolute requirement – it's rarely an absolute yes or no, but often a question of available GPU memory. There's a lot of other factors too which don't seem to be considered.