I have been doing moderate to heavy cardio with low calories (1300 - 1500 - seriously!) for a year and my weight has not budged at all.
It's a little early to tell, but since Monday I've cut back on cardio significantly, been lifting weights while still walking and moving around a lot and eating a little more. What do you know, my jeans that were pretty tight on me only a week ago are getting loose on me.
I agree with you that calories matter but a substantial calorie deficit could be just as counter-productive as a big surplus.
And basically, it's not the same for everyone as you seem to insist in almost every post you write.