Well specs are one thing, however actual perceived noise is sometimes a different story.
As a matter of fact I wrote "at least". About noise, the so called actual perceived noise is never the same for each of us, so I think it shall not enter into debate.
Also, the specs are sometimes measured under different conditions for different PSU:s and may not be directly comparable.
This assumption looks like plainly erroneous when referred to two coeval unit built from the very same manufacturer: but if you're referring to the 2004 S12-380 something may vary (even if such a PSU is not well suited to power any modern 12V rig).
Any numeric finding (spec sheet, Ecova certification, SPCR reviews) tells that the G-series is a considerably better unit.
That's why I'm looking for some real life experiences.
Broadly speaking, real life experiences cannot be used as numbers does: we have different tolerances to noise levels, we have different system, different rooms, different environment. All we can trust are numbers (luckily they are available, either in form of specs sheets/certifications or SPCR review), and these numbers let us make some educated guess.
Obviously real life experiences can add some useful hints to those guesses when they could be referred to the same circumstances.
It might do, but it depends of the specific enclosure.
Ok, in what way does it depend on the enclosure? And under what such conditions would vs wouldn't the G360W be able to handle that setup without spinning up the fan above base RPM?
Usually a PSU fan controller is somewhat temperature-based, both statically and dynamically, so PSU placement, case volume and other actual parts used bias its behaviour: therefore any heat build-up may likely change the expected performance.
Commonly we are used to regard the SPCR "hot box" scenario as somewhat representative, in a typical ATX enclosure, of a top PSU placement (when all the system heat rises due to convection, heating up the PSU itself, even if sometimes the actual PSU intake position may mitigate these conditions).
On the contrary, the SPCR "Out" or "Open" scenario, with a constant about 25°C ambient, may be more conveniently referred to a bottom PSU placement (also here the PSU intake position may alter the situation) into an ATX tower-like environment.
Changing the circumstances (such as swapping a more spacious tower with a cramped mini-ITX box, the CPU heatsink type and placement, the number and placing of case fans, eventual airflow oddities, and so on) heavily alter these baseline predictions.
Now, noise-wise the G360 has a remarkable behaviour in the "open" scenario, and it should easily meet your requirements, while in a "hot box"-like ambient it couldn't guarantee more than 80-90W without ramping up the fan, which will probably be clearly audible above the 120-130W mark.
Given a constant ambient temp of 25°C, how much the thermal rise is inside your actual case? As I don't know, I've said "it might do".
At any rate, if the actual thermal rise exceeds a few degrees, maybe something like a SuperFlower Golden Green (XE-series) could be a viable alternative to the G360, noise-wise (as per SPCR findings).
Hope this could help a bit.