In the US, almost anyone can get a pilot certificate. OK, anyone with lots of money. One multiple choice test, an oral exam and you have to prove you have the flight skills in a plane. Some airlines do some testing of new hires but many figure by the time you get to their door with 2000-5000 hours if you haven't crashed and don't have a record of violations with the FAA, you must be OK. Where as in many parts of the world, the airline hires non-pilots, tests them to see if they will make a good pilot, and then trains them the way the airline wants them to fly.