Probably a little bit safer, and much more comfortable for the pilots since the fuselage is so much wider. Airlines care about cost. On cost, the 737 is a hug

Probably a little bit safer, and much more comfortable for the pilots since the fuselage is so much wider. Airlines care about cost. On cost, the 737 is a huge winner, because it's the most produced airliner ever, by a wide margin. It also has a wide range of sizes, from 103 on a -600 to 188 on a MAX 10. There are lots of pilots that already have a 737 type certificate, there are lots of maintenance shops that can work on them, parts are very available anywhere in the world, and leasing companies like them because they are very common and thus a relatively liquid asset.