Should I return this Sony RX100 ? Need advice !

I got my RX100 a few weeks ago and I'm wondering if it's a bad copy or not. I see lots of great shots on this forum with great sharpness and details. But my photos are always soft and top right corner is really soft. I never managed to get a good close up shot either. Do you think I should return it ?



Shooting in the street, focus is on the girl's head in the center



100% crop



Beautiful church with lots of details



100% crop of the focus area



I expected this one to be really sharp



100% crop



Testing for corner sharpness



100% crop. Left crop is from top center, right crop is from top right

I'm OK with corners being a bit soft. 20 MP + 1 inch sensor in a so small body can't break the laws of physics. But here I see a huge amount of decentering... Or maybe I'm expecting too much ?