Yes, Korean is much more difficult to pronounce. Japanese pronunciation is extremely simple: 5 vowel sounds, no dipthongs, and a handful of consonants. The only struggle for me as an English speaker was learning not to blend the sounds together or slur. Otherwise it's a piece of cake.
The biggest difficulty in speaking Japanese, after wrapping your head around the grammar, is learning "The right way" to say something according to your standing with the person you're talking to. There's several layers of social cues that you have to navigate to speak fluently.
The biggest difficulty in speaking Japanese, after wrapping your head around the grammar, is learning "The right way" to say something according to your standing with the person you're talking to. There's several layers of social cues that you have to navigate to speak fluently.