Or rusty. If you want to be humble, just say your skill not good enough. Don't blame form or rusty. I believe you touch chess atleast once a week (since I see you visit this forum on regular basis).
Lu guo long same point as you he good form but you bad form? Come on, don't suan our hero, he fought hard and got the rank using real chess power. Who need luck in a 9 rounds match?