A web app though should be a situation where the memory usage will be roughly equivalent between the two platforms, so that seems reasonable.
If 6GB RAM iPhone runs out of memory, then how can it be better at memory management than Samsung phone with 3GB RAM, which does not run out of memory.
My problem is 16MB (8000*5000px) images in web browser which iPhone cannot handle. Most powerful phone every year, but 16MB is too much.
If you want something more similar I would suggest the standard "Samsung galaxy S23" which has 8Gb compared to the IPhones 6Gb
2017 phone does NOT run out of memory, but 2023 phone model RUNS out of memory?
Newer phone is worse.
Their point wasn’t “iPhones have more RAM than comparable Android devices” (as you say, that comparison is entirely unreasonable based on those devices), it was “this is the RAM on the devices where I observed this behaviour”. If the iPhone in question has more RAM than the Android, yet still OOMs where the Android doesn’t, that’s a pretty strong argument that iOS isn’t magically thriftier than Android at managing memory.