Come to think of it the only time we are ever even really shown Anakin’s great piloting skills in a real dog fight on screen is in ANH as Vader in the suit during the Death Star battle… when he wasn’t even written into the part of being Luke’s father yet… How sad is that.
Winning the Podrace, destroying the Trade Federation Command Centre, Battle of Coruscant? Or are you just referring to the OT? Because in that case that line about his skills was referring to a then dead character to set-up Luke having inherited his skills, hence justifying Luke’s sudden piloting skills during the Death Star attack at the end of ANH.
Luke piloting skills aren’t sudden. He is established as being a good pilot in his own right. Ben refers to it, and Luke talks about his skill in shooting womp rats from his T-16 Skyhopper in the pre battle briefing with Wedge. Biggs vouches for him with Red Leader in the scene partially restored to the SE.