After spending a year evaluating both AWS and GCP (with an emphasis on their managed database services; both SQL and no-SQL) my general feeling is this:
"Microsoft Windows is to Unix as AWS is to GCP".
(Or perhaps closer to the truth: "VMS is to Unix as AWS is to GCP".)
Baically AWS services seem like they are badly designed by buerocratic mediocre engineers following some bureocratic template for "a service".
GCP feels a lot saner (both API- and UI/console-wise). I often got the feeling it's designed by people who:
a) are smart and well-rounded in terms of experiences. It does take cleverness and experience to design something elegant that is also useful.
b) take pride in their work (it does show)
(And then, as a bonus: It's cheaper!)
I specifically spent a lot of time on Lambda and found it quite annoying compared to GCP AppEngine. So much bureaucracy. Just this thing that you have to specifically register every single Lambda API call and its parameters using an interface built by non-thinking people.. Sheesh.
For on-demand processing I just want a single HTTP-ish entry point, like AppEngine provides. (That way I can I move my service between different providers, if I wanted to move away from e.g. AWS.)
You can use Adwords as a self-service user. Without knowing so much of details you can run your ads but also you can bery easily ruin your budget. But many enterprise customers use it very differently than those users and they are extremely optimizing the cost. Cloud is the same. If you don't know how big customers use AWS, it is normal that you are surprised because AWS is still leading the market.
You say GCP is better than AWS. Which part is better? GCP does not have many services of AWS we benefit from. How can you compare totally different providers? You can only say AWS EC2 is worse than GCP. But you cannot compare whole platforms in one sentence.