This is a topic that I've contemplated for some time in my mind because I can't quite understand my mixed feelings for ATOTS.
Objectively ATOTS has so many great qualities: a well developed plotline/script, beautifully aesthetic cinematography, powerful overall acting, charming main /side characters, and a nice OST. I remember watching it and continuously complimenting how fulfilling the storyline was without needing to rely on the romance. As someone mentioned earlier, the bl narrative seemed secondary to the theme/plot of the series and was executed well enough on both the character development and romantic fronts.
However, at the SAME time, I often felt bored and detached while watching. The main characters (Phupha and Tian) weren't exciting to me and I found Tian's character development and village transition more enjoyable than the romantic development. In fact, I didn't care for the romantic aspect even though I watched it because it was a bl. Phupha x Tian aren't on my list of fav bl couples and I honestly have no plans of rewatching ATOTS any time soon even though it's top 3 on my bl list based on all qualities excluding the romance.
So then here comes Bad Buddy which isn't as equally strong to me in some aspects, but also has some great qualities: great mood setting cinematography, realistic dialogue/script, top tier acting, AMAZING lead chemistry, and also nice OSTs. The storyline is a bit recycled and the tropes/cliches are obvious and by default not exactly refreshing. However, despite using a lot of basic tried and true bl formulas, the execution, acting, and directing transform this series into something special. There is a subtle charm about this series that builds and captivates me. Not only that, but each EP has a really high re-watchability. In fact I've re-watched every EP at least 6 times and have memorized the ENG trans lines for many scenes. I don't even need subtitles any more. There was not one EP of ATOTS that pulled me to the extent that Bad Buddy has. Nevermind that Pat x Pran are #1 on my bl couple list.
In the end I like ATOTS...just not for things related to it's romantic plot. However, I LOVE Bad Buddy. The things that Bad Buddy excels in beats ATOTS to such a degree that it makes up for less strong aspects. Sometimes things don't always have to be perfect in every category to be a favorite. In the end, I'm drawn to things that pull me in and Bad buddy has done that in ways that I can't understand. Bad Buddy for the win. :)