Snapdragons are generally more performant with less consumption. Apart from obvious battery life effect, they tend to produce slightly better pictures due to heavy image processing - basically more data available within timeframe available for a snap, without annoying the user with slowness.
That being said, internet rumors are that over time samsung's phones on exynos tend to remain more snappy with various updates compared to snapdragon ones. I doubt anybody did serious comparison, I have s22 ultra with exynos (no other choice in europe) and so far so good.
One data point. I have a s20 ultra since November 2020 (first time Samsung owner), it still feels like new, it's the first phone I've had that hasn't shown its age.
I had Samsung phone with exynos, that thing barely lasts one day on battery. My low-end MotoG can take three days...
In EU Samsung has really bad reputation for putting exynos into high-end Galaxy phones in Europe. There is no way to check before buying, and your phone may last 30% less on battery. It was pretty well documented!
This in no way makes the situation ok, but in my experience the full model number is always possible to find both for shops and contracts and a quick google shows which model has which chip. Most people simply don't care enough and/or are not aware of the difference and don't check this.
No I can't. Shop advertises something like Samsung Galaxy S10 4G Pink. Exact batch numbers are simply not advertised. Only way to check is to open box, start the phone and check About Screen.
I had similar problem with cheap Lenovo. Chinese models were sold in EU, but would not support all local 4G frequencies. But doing this bait&switch with flagship phone is unacceptable!!
I could put up with the lower performance and battery life. What I can't put up with is the trash Mali GPU drivers. Exynos devices are basically DOA for any kind of serious emulation.
That being said, internet rumors are that over time samsung's phones on exynos tend to remain more snappy with various updates compared to snapdragon ones. I doubt anybody did serious comparison, I have s22 ultra with exynos (no other choice in europe) and so far so good.