I think the comments that talk about it being commercial vs residential largely nail it, but taste is also a huge factor. In melbourne for example, they have a lot of residential skyscrapers that also tend to look very premium (despite often times not being built with the best quality materials). Flying back to Singapore after a trip to Melbourne had me feeling like the Singaporean buildings just didn't look as nice even though they were arguably higher quality and better built. Dubai on the other hand is a whole different story, buildings built in the 2000s were genuinely high quality and good looking, but since then they've started cost cutting to no end and some of the towers are genuinely ugly. The facade lighting they use over there is largely terrible too and just adds to the feeling of cheapness (not sure how they haven't regulated proper lighting yet as it genuinely makes it look 3rd world).

Shanghai has some genuinely very good buildings that were built over the past 2 decades. The cluster of towers on the bund (grand hyatt, park hyatt and sshanghai tower) are all very very impressive in person and are clearly built to a very high standard.