Yeah exactly. Despite what people think, you need to use proper technique with CVT to get proper fuel economy. With bad technique I get around 12 to 13 and with good technique I get 15 to 16 within city. As an example, at a constant speed of 60, you can be at 3000rpm and also 1500rpm just due to throttle positioning.
Another thing is cvts are extremely inefficient at acceleration, so you have to ensure being at a constant speed rather than the usual way of driving with constant acceleration and deceleration. For manuals fast acceleration and then constant speed works best, but cvts economy gets murdered from fast acceleration so the acceleration has to be a bit slower as well.