I would not conclude that Intel's 22n is "very poor".
i7-3770K vs. i7-2600K: Temperature, Voltage, GHz and Power-Consumption Analysis
Pushing a 3.5GHz product to 5GHz is always going to generate extreme conditions for which the process node was not intended to operate.
32nm was developed to enable <= 4GHz clockspeeds, as was 22nm. When you compare in that regime you see 22nm does well in lowering power consumption, operating voltage, and die-size while operating at nearly identical temperatures to 32nm.
All those advantages continue as you push clockspeeds up above the 4GHz envelope, towards 5GHz, but the lead is not maintained (reflecting the fact you are pushing the ICs into a voltage/clockspeed regime for which they were simply not designed to operate).
To say that reflects poorly on the underlying process node itself is silly. The sort of thing someone would say if they didn't really understand how ICs are designed and iteratively optimized before tapeout (and after, with respins) to maximize internal design targets for the project.
To put it into an analogy, consider the core clockspeeds (and overclockability) of Thuban vs Llano vs Piledriver.
If the Thuban to Llano (45nm -> 32nm) were any indication of limitations in the underlying process node then you would have falsely lead yourself to conclude that neither bulldozer nor piledriver would be overclockable to 5GHz on the same 32nm node. But they can, because they were optimized with different goals in mind during design, layout, and respins before the final production stepping was settled on.
That doesn't mean a given node cannot be considered "very poor". It just means you need the right kind of data, information regarding the electrical parameters themselves (length-scale normalized to make them comparable to other nodes). Parameters like NMOS Idrive current per micron at 1V and 90C, or IDDQ (one type of leakage).
And don't forget reliability, having stellar electrical specs but degrading so fast the chip can't reliably function for more than a few months would make for a "very poor" node in comparison to say less spectacular starting parameters but having a rate of degradation that enables the IC to reliably function for 20yrs.