Maybe here is the best place to confess that I still don’t really understand all this.

1. If you are designing at 1:1, what should the width/height of your iphone 6 be ? 375x667 or 750x1334 ? Cause 1:1 on a retina display would be the latter right ?
2. If you’re designing 1:1 with vectors in Sketch, and add a images, how would you treat that image ?
3. Why does Sketch default for iPhone 6 is 375x667px ? What does it refer to ? Cause if it’s a retina screen there is more than 375px wide ! Why isn’t it 375x667 pt , and a pt=X inch…
4. Please enlighten me :D:D:D:D:D