We know the resources/extent of NSA capabilities and so it is pretty certain their spying efforts dwarf anything China does. I mean we know they spied on the German chancellor and she is on our side!
They actively engage in corporate espionage (in a massive way) to aid their homegrown companies and directly harm US companies. As far as we know, the NSA isn't stealing trade secrets from BMW and giving them to GM.
They directly attack civilians for hosting content they don't like, e.g., the recent DDoS attack on github.
After a 2-second Google search: "Snowden says NSA engages in industrial espionage" (from here http://www.reuters.com/article/2014/01/26/us-security-snowde...)
What you posted is just the advocacy center's stated purpose--to help facilitate bids by US companies for foreign contracts.
I know the US government gets directly involved when dealing with companies like Lockheed Martin exporting military equipment. And I'm sure the NSA would share military secrets with defense contractors, but that is directly in their scope of mission to protect national security.
Stealing trade secrets to pad the bottom line of US companies is not part of their mission, and so far you've posted nothing to prove they are violating their mission in this way.
How is that certain? Where is the Chinese Edward Snowden dumping the docs about their capabilities?
>I mean we know they spied on the German chancellor and she is on our side!
Are you implying China couldn't spy on Angela Merkel if they wanted to? Or that they haven't?
https://en.wikipedia.org/wiki/Intel_Active_Management_Techno...
Still, it runs out-of-band, it can be accessed even if your computer is turned off, as long as it's plugged in to a power source.
* EDIT * Actually, it looks like you can.