maybe, when i saw it originally there was only one version of it . . . . (i also dont see a publication date in your pdf, just a reference that production starts autumn 2021, meaning it is likely published no later than the 1st half of 2021) It also looks like the c40 design was updated for this study, it doesnt specify if the xc40 (ice version) was updated to match or still using the old data. (unless i missed it somewhere) edit here: it wasnt, the c40 is a streamlined variant designed specifically for bev with different aerodynamic shape. Im not sure if that is as accurate a comparison as the initial release.
the numbers SHOULD get better with time i agree, but i have read that the EU carbon/kwh went UP in 2021 instead of down. (tho a ~30% increase in just a year or two seems like a way bigger improvement than is reasonable, i kind of think that they changed something in their math if thats what they are publishing now)
Greenhouse gas emission intensity of power generation in the European Union has returned to the overall decreasing trend of the past decades. This follows a slight increase in use of fossil fuels during 2021 and 2022, linked to post-COVID recovery and the war in Ukraine. Generating one kilowatt...
www.eea.europa.eu
also remember the us emits more carbon per kw/h than the EU does at this point (~372g/kwh vs 255g/kwh for EU as of 2019).
css.umich.edu
all that said, i have no clue what the answer is, but with all the heavy metals used in batteries, current battery technology is not the long term answer, it is a bandaid at best, and a kind of flimsy one for BEV without improvements in both generation and supply grid.