I wouldn't say Massively improved. But it was definitely noticeable. By not massively improved, I mean photos from iPhone 8 looks fine, but when you gets to compare with X, you immediately notice the difference.

The same goes to X and Xs, although the difference is a little less drastic, but P30 and Pixel were both winning, and when you compare it, it was obvious.

I have an 8 and while the X is subjectively better, a moment or two in snapseed can more than make up the difference.