Why? What makes it "better"?
the songwriting isn't drastically different, the guitars are more "complex" I guess but still not really anything too mindblowing. I don't see the huge difference as to how it's a better album
the things that make it better (to me, at least, i can see people disagreeing with everything im about to say) are the songwriting (which like you said isnt drastically different but i do think it is a bit more interesting), the musicianship (seriously the drums on Suburbia...wowza), and the production is much much much better. I also think the albums stand outs are better than the upsides stand outs and it feels a bit more...concise and focused. but like i said, i can see the argument from both sides.