ktl spent 6 weeks in melon top 10 so i don't know what you mean by barely top 50. it was also released at the height of the burning sun scandal so the underperformance in korea was more likely related to that.
lsg did well in korea. internationally it was weaker but i think thats cos it wasnt a hype girl crush type song but also yeah it was released very quickly after the previous release. but i think thats normal, no one does well with super quick succession releases (like 1 month apart). Look at twice scientist, bts - on and ptd etc. all did very poorly by those artist normal standards. so i don't think you can conclude that bp specifically relies on hiatuses. i think they would do well with releases 6 months apart
i dont think the solo releases really prove anything cos obviously bp are more popular as a whole compared to individually except maybe jennie. i doubt rose and lisa wouldve done much better even with a greater gap between previous releases. i think rose wouldve done a lot better with a korean release. lisa just isnt popular in korea.
This thread is about the top 50 yr end chart.