Optimism Quietly Overtakes Arbitrum, Layer2 War Grows Intense According to reports, both Arbitrum and Optimism retain 35-45% of new users, but Optimism has a higher retention rate of permanent users. 26 views🅙︎🅐︎🅜︎🅔︎🅢︎ 🅕︎🅡︎🅔︎🅓︎, 07:33