I think there is little GCP does better than AWS. Pricing is better on paper, but performance per buck seems to be on par. Stability is a lot worse on GCP, and I don't just mean service outages like this one (which they had their fair share) but also individual issues like instances slowing down or network acting up randomly. Also lack of service offerings like no PostgreSQL, functions never leaving alpha, no hosted redis clusters etc... Support is also too expensive compared to AWS.

Management interfaces are better on GCP and sustained use discount is a big step up against AWS reservations. Otherwise, I think AWS works better.