There's 3 power settings for any cpu. Idle, base, turbo. Some have turbo disabled electrically because the silicon won't hane the higher turbo speed.
Regardless of that, PL2 is turbo. And temporary, lasting only 26 seconds. After that, speeds drop to PL1. That's how it works.
Assuming the same cooling solution, 22w PL1 is hotter than 15w PL1, regardless of base speed. Because base speed is meaningless unless one of the rare versions where turbo is disabled. Or if the user disables turbo.
Disable turbo to allow a cpu to run at base speed and throw PL1 and PL2 out the window, those are turbo wattage. After which even TDP is moot because that's a thermal design, not an electrical power usage.
So if running simply at base speeds, the cpus themselves will determine the amount of heat totally dependent on actual power usage according to load. A cpu at 2.4GHz and 1.3v is going to run cooler than a cpu at 2.2GHz and 1.4v vcore.
It's not in the numbers or fact sheets or whatever theory about base speed use you care to drag up, it's simply whatever the cpu uses according to the bios settings.
Base speeds are a useless number when the cpu uses turbo. Apples and Oranges.
TDP is Thermal Design Power. It's supposed to represent the size of the cooling solution for a range of cpus. I7-3770K = 77w. I5-3570k = 77w.
Yet the i7 only actually electrically uses about 70w and the i5 uses about 63w, as tested by Intel, using an average thermal number taken from a specific series of apps.
Those numbers come from running the cpu at base speeds only, on the Intel test bench using Intels bios. Not gigabytes or msi or asus. Those are vendors, whose bios settings can and do change power limits and consequently, power usage and heat. Take for granted Dell does that too, obviously as shown by 2 identical cpus with different power limits and different clocks. That includes messing with Tau, which is PL2 duration.
Apples and oranges, you can't measure one against the other, and it's pointless discussing base speeds heat and turbo limit wattage in the same sentence. Doesn't apply like that.