Thanks for the interesting case. I guess many readers have read too much into lt2 and lt3 but overlooked the code under 2.4.2: C++ could actually be that bad. In that code, you only showed the timing in comments. The result may be worth a table. Perhaps another way to structure the manuscript is to give the surprising result of 2.4.2 first and then to explain what makes that happen.
Yeah—I think I laid out the paper more like a story, but I might indeed need to change that as it appears it leaves people confused before they get to the punchline. Thanks for the feedback! Glad you found it interesting.