I have a Pfaff 7570 with that stitch. I have to put invisible thread on top. I tighten the thread tension a lot and use a slightly longer stitch. It looks like hand quilting on both top and bottom. I also position the needle so that it stitches 1/4" to the side of the seams so it looks like hand quilting. I think you may just have to play with stitch lengths and tension to get the look you want.
good luck.