Actually, they are somewhat on par- NEITHER has been submitted for peer review. Of course, the PM article does not claim to be, nor would it be confused with an actual research paper. It just pointed out the fatal fallacies in their methodology- problems that you only need a comprehension of English language and a dash of logical thinking to readily understand.
That might explain why the Swedish Institute paper was originally released in 2017, then revised in 2019 (Surprise!, electric cars fared better in the updated version). The original, unrevised version is what was naturally posted here. In the intervening 4 years however, it hasnt yet been formally submitted for, nor is it apparently pending or undergoing peer review to any science journal that I could find.
When you dont want your paper peer reviewed (or you retract it from the process), its because you either know its got serious problems that need revision (as has already happened), or you wish to disavow it altogether.
I dont know which it is, but a non-peer reviewed paper is preliminary at best. Lacking this review, it, like the PM article, should not be confused with a vetted, accepted and thoroughly scrutinized scientific paper.
Time (say, the next 10-20 years) will ultimately tell, but as the technology steadily advances, the carbon footprint of renewable energy production and electric vehicles in particular seems to be trending rapidly downward, making their original AND revised claims of "dirty" batteries less and less germane to the question of whether an electric or petrol powered car is the "greener" choice.
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