The phrase "easiest difficulty" refers to the simplest level or setting in a game or activity, where it is easier to win or achieve success. Full definition
But if you let them slip past, you have no chance of catching them again (Even on easiest difficulty). (newgamenetwork.com)
What has changed, arguably, is the game's accessibility, with players new to the genre of versus fighter treated with kid gloves at easier difficulty settings. (t3.com)
Such that the baseball one has an all new type of AI opponent you never see in easier difficulty levels? (gamingreinvented.com)