ShortCircuit

Amazing chemistry between the leads. Awesome cinematography. Great music.

Differences: unequivocal (and long) HEA for one of the dramas.

Unlikely friends solve mysteries together. There's bromance (MLC wins this one), interesting stories, hidden tribes and sorcery, the works. Good atmosphere, personal plot linking the MLs, good support cast in both cases.

MLs can - among other things - stop time and move around on their own. Both seem to come from different 'verses or different times than the core one.

Also, superpowers - regular superpowers in MB, more like over-human powers in W2W.

Mind-reading MLs, some legal troubles involving main characters, some police investigations also involved.
There might be some romance in the future, too soon to tell.

Crime and mind-reading at the same time. It's too soon to tell if there's going to be (any kind of) romance, but I guess every 16 eps drama is doomed to have it.

Both dramas involve police procedures but the leads are outside the profession, contributing hints to the investigations.

Same ML, historical setting (costume cdrama), a bit of a similar topic (women empowering themselves through commerce in a patriarchal society), similar new spouses dynamics.

Destined seems to be more romantically-inclined, though.

Supernatural powers (seeing ghosts and other critters of the night), helping to save (some of) them, a bit of detective work, an interesting ragtag team... There's an underlying current of personal hurt & healing that brings it all together.

FL is a ghost, ML is trying to help her find out who she is and why she (supposedly) died. There are strong hints of police cases underlying the main plot. While doing the sleuthing necessary to solve the FL's case, other ghosts are met and freed to another plane of existence.

This setup is very similar to the Thai remake of BIOG too, Let's Fight, Ghost (not going to make a double rec).

There's a similar feeling that the story takes place somewhere outside the civilised world, where everything is allowed and still there are some unwritten rules that even the madmen and wild people seem to recognize and respect, but life is pretty cheap and usually those with power will rule, no matter their morals and ethics.

Both dramas have a distinct atmosphere of impending, relentless doom, despite the actual endings for the main characters.

Obsessive ML characters, a common theme of wanting justice (in different ways), both are period/costume mystery/judicial dramas, not a lot of predictible romance (of any type), good side-kicks to the main characters.

Also, great casts in both dramas, and very good production values.

Both detectives leading the investigations are independently rich (bringing interesting workplace dynamics), Elijah is in both of them (I thought it was just someone looking a lot like her, LOL, initially, nope, same actress), both MLs (of the two dramas) have colourful past experiences and things to clear up. Also, both MLs are definitely smart and tend to notice small details (which is always a plus.)

TGD had a pair of detectives, it looks like Bait/Decoy won't.

Depending on how Bait/Decoy develops, it might turn more noir than TGD ended up.

There are some similarities (so far) in the topics both dramas cover, like the internet dangers and security measures one person can take to make themselves more safe. There's even a pretty similar format, as in each episode includes an extra (security tips for AYS and the Monster Notes for TSOTM). There is a strong current of bromance (of the good-friends only kind) in both dramas.

Both give basically the same vibe (again, so far).