Register from Amazon.co.jp/.ca/.com.mx or .com?

[ma.tt]

I was wondering if the registration process is easier depending on the marketplace you first register your account.
My old account was unified (Amazon.co.jp/.ca/.com.mx/.com) and during the years I noticed that Amazon.co.jp is less stricter than Amazon.com in terms of suspension for bad metrics etc.

Would it be the case also for the initial account verification?

If I am not wrong once you are in and verified you can activate your listing in other markets as well.

Anyone ever tried this?

[elmo]

From my experience they all have some form of verification

USA I would consider the hardest, followed by UK, CA and JP