That doesn't mean that it's easy, it just means that hacking a PS3 is highly motivating. Making some lame centerfuge explode half-way around the world is high on patriotism (I guess) but short on lols.
It's not easy (the sophistication of some of the console jailbreaking work is extremely frustrating to some of us in the pro vuln research community, in that they treat as footnotes things that would score a whole Black Hat talk).
He didn't say that it's easy, just that it isn't so hard that you need nation-state backing to do it. Judging purely from their capabilities, Equation Group could be a small group of college graduates who make a living with hacking and don't settle for the low-hanging fruit.
Of course the other evidence strongly suggests that this group is NSA-employed, but the real reason why their malware is so much more sophisticated than anything else out there isn't that nation states have staggering amounts of resources, it's simply that normal malware doesn't need to be sophisticated.
You are saying that you think it is reasonable that a small group of "college graduates" have created and executed a global espionage campaign against airgapped military targets using software that makes previous nec plus ultra NSA cyberweapons look obsolete.