Few if any laptops have decent cameras. This is partially because until recently most users didn't actually care that much, but also for practical reasons; modern laptops have very slim lids, so you can't really fit decent optics (a phone is a good bit deeper).
For comparison, the MacBook Air has about 2-3mm of usable space in the lid for optics + sensor. The iPhone has something like 7 or 8mm. For lens design and the ability to have a very slightly larger sensor, that's a huge difference.