I don't think MS ever revealed enough information to answer that. For example, I haven't seen any explanation of how heat is transferred from the servers to the skin of the container. I can guess how they did it but I don't want to make any judgement based on guesses.

Cooling worked well, everything else sucked. https://www.itpro.com/infrastructure/data-centres/microsoft-...

They only reported on the positives. The negatives can be intuitively guessed, because they didn't explain how they solved any of them.