You're including Austin, TX (Semiconductor) in that search. Their CA engineer salaries are much lower. Also, I wonder about that data. I've seen bigger CA databases that have more records and lower salaries. Also, look at what AirBNB pays their H1B's.
http://www.h1bdata.info/index.php?em=SAMSUNG+RESEARCH+AMERIC...
Edit: Sorry, going to retract this. My data is a few years old. It seems like they have started paying market rates.
http://h1bpay.com/salaries?company=samsung+&city=mountain+vi...