Both center in revenge stories and in both dramas the main bad guys who control everything are similar. The K2 is a bit darker while in Lawless Attorney there's more humour included.
These dramas give off similar vibes, both are mini-dramas with fantasy and romance. In both, leads don't like each other at first and bicker alot but end up falling in love.
Both are thai romcoms with fantasy twist. Thai dramas usually tend to be dark and over dramatic which these two dramas are not, instead these dramas are light and easy to watch.
Both give a similar feeling and main character development is kind of same.
Both dramas are similar in reversed kind of way; in Down with love female lead is pretending to be gay and in Personal taste male lead is pretending to be gay. Both dramas have situation where lead is in desperate need of job/housing and that's why they end up pretending being gay because they at first thought they don't like the other lead and it would be totally harmless. Due to this many funny situations occur and leads end up falling in love even though the other lead is still assuming her/his crush is gay.