Outlander vs. Harry Potter and the Half Blood Prince

Outlander has magical time travel; HP has magic.

Outlander has a blonde witch, Geillis Duncan; HP has a blonde witch, Fleur Delacour.

Outlander has a Loch Ness monster; HP has mermaids.

Outlander has a black mineral spring hidden under a monastery; HP has a black lake hidden in a cave.

HP has Inferi; Outlander has a lynch mob.

Outlander has divination via a bowl of water; HP has divination via a bowl of memories.

Outlander has a dangerous horse, Donas; HP has a dangerous hippogriff, Buckbea....er, Witherwings.

HP has a gentle giant, Hagrid; Outlander has a gentle-ish giant, Wee Angus.

Outlander has an impetuous red head, Jamie Fraser; HP has impetuous red heads Fred, George, and Ron Weasley.

HP has a clever herbologist, Hermione Granger; Outlander has a clever herbologist, Clair Beauchamp Randall Fraser.

HP has the complicated and evil Professor Severus Snape; Outlander has the complicated and evil Captain Jonathan "Black Jack" Randall.

HP has werewolves Greyback and Remus Lupin; Outlander has a pack of wolves.

HP has a castle, Hogwarts; Outlander has a castle, Leoch.

In HP, Harry plays a hazardous game: Quidditch; in Outlander, Jamie plays a hazardous game: political intrigue.

HP has a kindly headmaster, Albus Dumbledore; Outlander has a kindly horsemaster, Alec McMahon MacKenzie.

Outlander has lots of sex and rogering; HP has lots of snogging, and probably some students named Roger.