I agree that it's harder to get a really intense workout on the elliptical. It just doesn't get my heart rate up like the treadmill does (or even the stairmaster with actual stairs, not the one you bounce on).
That being said, who even pays attention to the calorie counters on the machine? You know who does that? Already skinny girls that go to the gym to bounce around on the elliptical and not break a sweat or even get a little red faced. Those machines are
always the busiest at every gym I've been to and very rarely do I ever see anyone working themselves hard one one. These people don't even use the proper technique. If you actually use the machine correctly you'll feel it a lot more. It's a really easy machine to cheat on if you're not making a conscious effort not too.
Personally, I just don't like the movement. I remember a trainer saying that in an article or on TV or something - the elliptical is just not a natural movement. Running, biking, stairs are all functional movements and the elliptical is just...not. And I agree. Haha. It feels weird to me.
So for all those reasons I pass on the elliptical unless I'm nursing an injury. I used to use it when I was heavier, but then got into running and spinning and haven't looked back.
And yeah, the article's not very insightful. I think it's meant mostly for people who aren't aware of the flaws in the machines. People who aren't trying to lose weight (or just started getting into fitness) and haven't done their homework on the calorie counters and things.
Clearly we're all well beyond that

.