Ness refers to his magic attacks as "PK" attacks. This is supposed to be "PSI." (The Earthbound games use the term PSI to refer to magic, though an early beta version of the game used PK, and this is probably what caused the error.)
The trophy history states that the Master Sword from the Zelda series first appeared in Ocarina of Time (1998.) The Master Sword actually appeared for the first time in A Link to the Past (1992.) (This error was corrected in later issued copies of the game.)
The trophies claim Meta Knight from the Kirby series made his first appearance in Kirby Super Star in September of 1996, when he actually debuted in Kirby's Adventure in May of 1993.
The first "Metroid" game for the NES that Samus Aran and many other characters and objects from that franchise debuted in was released in North America in August of 1987, not 1989 as the trophies' release date of the game state.
In Western versions of the game, Princess Daisy's trophy states that she appeared in "Mario Golf". She was re-introduced in "Mario Tennis" and became a recurring character in spin-offs since then. However the Japanese version accurately states she appeared in "Mario Open Golf" (the Japanese name for "NES Open Tournament Golf") where she was in fact Luigi's caddie where Peach on the other hand was Mario's caddie. This is likely due to a translation error.
In the Japanese version and early copies of the North American version, if the player zooms in on the Princess Daisy trophy, she has a third eye on the back of her head underneath her hair - likely an error during development with little to no re-examining in details before publishing the game to be distributed to markets. This bug was fixed in PAL versions released in the spring of 2002 and the "Player's Choice" re-release of the North American version in January 2003.
The intro movie shows Samus using a Missile against Ridely. Since the Samus's portion of the intro is based on Super Metroid, she wouldn't have Missiles at that point in the game.
The announcer in the Japanese version and/or if the game's language setting is set to Japanese, he pronounces Jigglypuff's Japanese name of Purin as "PUR-in" instead of the phonetically accurate "poo-REEN".
The intro movie shows Samus using a Missile against Ridely. Since Samus's portion of the intro is based on Super Metroid, she wouldn't have Missiles at that point in the game.