Having flown the 737 and the 777 several,things are noticeable:
Firstly, Boeing are getting more and more reticent about what information is provided in the FCOM - the exact info about TOGA at low alt/touchdown that caught the EK crew out was present in older editions of the manual but not recent ones. I often learn things that aren’t in the manuals from people who were trained on the aircraft some time back.
The 737 is a 60s design out of which Boeing have wrung every single knot and .02% fuel efficiency increase. They have done so while being forced to keep a common type rating with the Classic. They have added a lot of stuff in the background while maintaining a flight deck with an archaic and complex Caution and Warning system that has zero prioritisation and requires much more cognitive processing simply to identify the correct checklist than the EICAS that Boeing have been supplying with newer aircraft since the 80s.
This is not a happy collection of circumstances, partially driven by customers (SWA I’m looking at you...) but also a consequence of what seems to be a new philosophy at Boeing.