What the industry calls a "midsize pickup" IIHS calls a "small pickup". The Honda Ridgeline is not included in this test group, because IIHS categorizes it as a "full size pickup" (based on payload capacity I guess).
The Ridgeline's a decent truck that'll do what most truck buyers need it to, but full size? It most certainly is not!
What would that make say an F-350? A big rig? lol