Design and aesthetics are largely subjective, but that doesn’t mean they’re still not worth comparing. And when it comes to design decisions, the Pixel 4 and iPhone 11 Pro actually look fairly similar from the rear with glass backs and squarish camera bumps. The chassis on the Pixel 4 is aluminum, while Apple uses stainless steel.
When you flip the phone over, it becomes a different story. The iPhone 11 Pro retains the signature notch (which has become much less controversial since its debut). The Pixel 4, by comparison, actually sports a fairly prominent and somewhat outdated “forehead” bezel instead. While, again, looks are subjective, many reviewers conclude that the iPhone 11 Pro just “feels” a lot more premium.