I felt like it was much harder than a normal cardio+class. Can't believe I tried to trick myself into thinking it was the same thing. :-P
In any case, once the adrenaline was pumping - and there was a LOT of adrenaline for me in this test - I was pleased with how clear-headed I was. I think I do a lot better when I don't overthink things, and I was so exhausted by the physical part of the test that I wouldn't have been able to think if I had tried.
Another change I've seen since my last test 6 months ago is how quickly I was able to regain control of my breathing and heart rate after very intense exercise / stress. I credit the running in part - my resting pulse is much lower now, and I've noticed my recovery rate is much faster than it used to be when I've monitored it.