I think Intel’s execution has been pretty decent, they delivered/will deliver with ICL/TGL/ADL. ADL will be better than Rembrandt in terms of CPU performance. If anything, it’s AMD that needs to pick up the pace with Zen4 being so late, especially in laptops. Intel’s graphics still need more work for sure, though. Like uzzi38 said, the 7nm delays didn’t help there.
ADL vs Rembrandt
In single threaded performance ADL should be faster, but It's questionable by how much considering Intel mentioned Up to 20% performance uplift, which is most likely the best case scenario in an unknown test, and we don't know against what(Tiger Lake or Rocket Lake?).
The problem is multi thread in my opinion at least for 15W.
For 15W TDP Intel is planning only 2+8 which won't be enough against an 8C Rembrandt.
For 28-45W TDP Intel has 6+8 which should be enough to be more powerful than an 8C from AMD, and It doesn't look like AMD plans to release anything with more cores for mobile until Zen4.
For 55W TDP there is 8+8, this will be the new king for mobile multi threaded performance.
This all depends on If ADL's HW scheduler will be effective in using both big and small cores for best performance and If there will be a need for software support for ADL, like It was needed for Lakefield.
I personally find this approach of using big+small cores interesting. I understand Intel chose this approach, because of 10nm process. We will see If It was a good move or not.
P.S. IGP could have been 128EU.