The confrontation between Miguel and Robbie over Sam is very similar (and most likely a homage) to the first confrontation between Daniel and Johnny over Ali in the first "Karate Kid" movie. Both the conflicts happen because the boyfriend is jealous at seeing his girlfriend with another boy. Both conflicts take place at night, on the beach during a get-together, and a bonfire is burning in both instances.
In the original movie, Mr. Miyagi says "Different but same" while looking at a picture of Daniel and Ali. The episode's title is an obvious nod to that line.
When Danny offers a Subaru to Johnny, he retorts "What do I look like, a lesbo?". This is a reference to Subaru's daring marketing campaign from the 1990s targeting lesbian drivers in the US, when most other brands stayed away, in fear of alienating their user base. This marketing strategy paid off - sales increased multi-folds and the brand became strongly associated with the demographic.
Johnny tells Daniel, "You couldn't leave well enough alone." This echoes the scene in Karate Kid after the Halloween Dance when Johnny catches up to Daniel and tells him "... but you couldn't leave well enough alone."