in any case, you can't say it's support for dark matter in this specific case without actually running the numbers (what are the rotational speeds and what is the bending curvature)

dark matter halos must have a somewhat specific distribution that goes beyond the perimeter of the visible galaxy itself.

however the more that i think about it this example is likely to be unhelpful. the closer galaxy looks elliptical and most dense elliptical galaxies "have no dark matter" (in basic MOND this is a phenomenon that falls out if the gravity law). We'd really need lensing from a more "normal" looking galaxy.