[Request] Are Air Conditioners or Data Centers Causing More Heat?

Some news report claims air conditioners are making heatwaves worse (are they? seems plausible), commenter suggests that AI data centers are a much worse contributor. Which is it?

As a bonus, if someone has both maths, whats the raw heat output vs the environmental impact of both?

As a double bonus, if it is the air conditioners, how many more data centers would it take to create enough heat to overtake.