"SnapStart for Python" costs extra though. If we are paying then you can even have prewarmed Python lambdas with no cold start on AWS (Provisioned Concurrency).
Python Workers use snapshots by default and unlike SnapStart we don't charge extra for it. For many use cases, you can run Python Workers completely for free on our platform and benefit from the faster cold starts.
They are comparing the baseline product of all three platforms. Why should we take paid add ons into account for 1 platform.
As I mentioned, if you are ok with paying, then you should also compare Provisioned concurrency on AWSbas well, which has 0 cold start (they keep a prewarmed lambda for you).
Product comparisons are not purely technical in nature. As a user, if im paying extra, I would much rather the 0 cold start than just a reduced cold start especially with all these additional complexities.