At least the headline says "No WIMPS! Heavy particles don’t explain gravitational lensing oddities" and also inside the article (near the two colorful figures) they write
"On cosmological scales, WIMPs continue to fit the data extremely well. But once you get down to the levels of individual galaxies, there are some oddities that don't work quite as well unless the dark matter halo surrounding a galaxy has a complicated structure. Similar things seem to be true when you try to map the dark matter of individual galaxies based on its ability to create a gravitational lens that warps space so that it magnifies and distorts background objects."
and later
"It's a relatively simple thing to do with the WIMPs, since there's only one pattern we'd expect: the gradual fall off of dark matter levels as you move away from the galactic core. The lensing predictions based on that distribution do a poor job of matching the real-world data of where the lensed images show up."
So I guess the real article (which I haven't read) has the hypothesis that the WIMPs fit badly and they try to make a case for the axions. Still it is kind of a nice clue to show that the WIMP predictions fit badly even if their axion solution is weak..
"On cosmological scales, WIMPs continue to fit the data extremely well. But once you get down to the levels of individual galaxies, there are some oddities that don't work quite as well unless the dark matter halo surrounding a galaxy has a complicated structure. Similar things seem to be true when you try to map the dark matter of individual galaxies based on its ability to create a gravitational lens that warps space so that it magnifies and distorts background objects."
and later
"It's a relatively simple thing to do with the WIMPs, since there's only one pattern we'd expect: the gradual fall off of dark matter levels as you move away from the galactic core. The lensing predictions based on that distribution do a poor job of matching the real-world data of where the lensed images show up."
So I guess the real article (which I haven't read) has the hypothesis that the WIMPs fit badly and they try to make a case for the axions. Still it is kind of a nice clue to show that the WIMP predictions fit badly even if their axion solution is weak..