@Xrhstos The source image you cut was from January 2017, and as far as I can tell, the current megapack cutout is from a slightly more recent source, from October 2017.

Additionally, I'd recommend reading the Tutorials and Guidelines for Cutters thread - the edges of your cutout are quite rough, and the source image you used was large enough to be cut at 250*250px, which is the standard size for megapack cutouts, rather than 180*180px. There are also tutorial videos in this post for how to easily create a cutout using remove.bg.