It is for surely to be worried, we all know how inefficient is Exynos when compared to Snapdragon, particularly differences were high in Galaxy S20 series
Inefficiency is due to M5 custom core the have been using. You should skip Note 20 as it is the last flagship with M5 custom core. They have ditched M core with M5. So next Exynoss SoC will be better. The Gpu side will be also better as they have switched to AMD.