This test, for example, had an impact right on the top of the head and the forehead - who’s ever taken a bike hit there? This test didn’t even measure side impacts, which I’d guess are more common in road cycling.
They did in fact test side impacts, or did you refer to some other test linked above?. This video which is embedded on the site I shared above breaks down the test method in a simple way. The woman mentions how they first have applied the two tests which are used on the market to reach approval of a helmet - one which measures impact to the top of the helmet and one which measures side impact. At 00:23 she explains that in order to better reflect what actually happens during a fall from a bike, they have simulated various impacts with angled drop tests (at what seems to be different velocities). In summary: 5 different impacts of which the majority are angled impacts. Seems reasonable enough to me and sharing similarities to the Virgina Tech test which @Pbase linked to above.