SRLY?

[Gennady]

59 minutes ago, nonistaicho said:

and to answer your post: they are not developing, they are applying a patch that somebody else developed meanwhile.  Also, it's the same patch, the same server, no matter whether its NA or EU, my friend.

And when patch needs to do something with data, time depends on amount of that data. And probably it's bigger for EU than for NA. That also was explained in other topic: 

 

[Gennady]

Also, let's say developers created some migration tool, tested it and gave it to devops. There is no guarantee that tool that worked on some test server will not produce errors on other, real, server.