It's easier to prepare ramen than pizza IMO. Even if ingredients are simple, you need a lot of skill to make a good Neapolitan pizza.
Risotto is even harder for various reasons. And what about Sartù di riso?
Risotto is even harder for various reasons. And what about Sartù di riso?
But that doesn't make dishes or a cuisine sophisticated per se.
To me sophistication requires knowledge and mastery even if you need to make a very basic and the result is not good, think of a beef Welligton or roast beef or a soup d'onion.
Those are all much more complex dishes than making a pizza, they require more work, more ingredients, more time, more preparations.
One of the most refined food I know is classic French omlette with just two ingredients, eggs and butter.
I don't say the Japanese lack refinement (sushi is one example of this), still there are a lot of complex Italian dishes as well.