What you are seeing is the difference between what I personally feel and what I could objectively prove to an AI skeptic.
If I have to "prove" my productivity in a court of law - that is to say, you - I'll down-modulate it to focus on the bits that are most objective, because I understand you will be skeptical. For instance, I really do think I'm 10x faster with Terraform, because I don't need to read all the documentation, and that would have taken absurd amounts of time. There were also a few nightmarish bugs that I feel could have taken me literally hours or infinity (I would have just given up), like tracking down a breaking change snuck in in a TS minor update when I upgraded from 2.8 to latest, that Codex chomped through. But I imagine me handwaving "it's definitely 10x, just trust me" on those ones, where the alternatives aren't particularly clear, might not be an argument you'd readily accept. On the other hand, the 5x gains when writing my website, using tech I know inside and out, felt objective.