Different but seemingly identical laptop computers can operate at grossly different temperatures, depending on the software setup.
Some packages keep the processor working harder than others. Its a hard comparison to make.
I have an i7 notebook. Most tasks will not lift the meter above 25%. However when I convert HD video, I can keep it at 90% for hours. Temps are not a problem but the manufacturer chose a CPU about 30% slower than what Apple chose.
Apple may have chosen the Wrong CPU for the cooling profile of this notebook.
I’ll hand it to Apple, they provide good support for manufacturing problems but I’ll wonder how they will compensate customers if the fix is underclocking the CPU?