While there may be a lot of countries where it may be harder in terms of qualifications, the US is probably singular among western democracies around the capriciousness and randomness of its processes. Particularly for skilled immigrants, and particularly those from India and China.

Which other country goes "skilled immigrants RAH RAH!" but also imposes a random lottery instead of going on the basis of some kind of points/job offer based system? In which other country can you have a "manager" in your job title and then get a fast track to PR (L1-A) regardless of whether you are a Technical Account Manager 2 years out of school vs a Director with 20 years of experience?

Which other country imposes arbitrary moving dates for when you can get permanent residency? My understanding is every western democracy has a well defined path to permanent residency from a work visa. In Canada it is 0-3 years, in the EU it is 2-5 years (based on various factors). But once you tick those boxes you know how much time it will take. In the US, it really depends on USCIS's budget, the phase of the moon, which country you are born in, and how many green cards they decide to "waste" in any given year.