Some paths are quota based by country of origin, so getting a green card is exponentially harder for a Chinese or Indian citizen than an Aussie, for instance.
Yes, but that has little effect on H1B visas. European applicants are in the same pool as everyone else.
> getting a green card is exponentially harder
Nobody mentioned getting a greencard, which is a problem in itself. Just a work visa. Which, if you're a European citizen, is dependent on a lottery.
Yeah, it's easier for an AU citizen to get a visa (because there's a special program for them), but you haven't said why it's easier for an EU citizen to get one. Please back up your claim.