Somehow they both give off a similar vibe. I feel that the humour (I laughed so hard in SWDBS and am finally finding something that makes me laugh just as much with BTIMFL) and the mix of lighthearted romance with pretty serious elements are kind of similar.
The storyline and the characters are totally different though. Although they are kind of the only progressive k-dramas out there: strong female leads and challenge of traditions.