Many years of playing...marginal improvement vs my effort. If I'm having a good day, I can play a pretty strong game against much stronger opponents. If I'm not having a good day on the board, which is often lol, expect some tasty blunders. "High ceiling, Low floor" was a phrase i heard recently that describes my chess well.
(no disrespect intended below - casual)
2000+ kill list : 81 games (**10 cheaters**)
2100+ kill list : 21 games (**5 cheaters**)
2200+ kill list: 10 games (**3 cheaters**)
2300+ kill list: 2 games (**0 cheaters**)
Biggest rating discrepancy win: Tomi (blitz 2314 vs 1517)