I don't know or believe most of what "they" tell is the difference in chroming, but I have a 55 caddy with original chrome (gobs) that has spent many of years outside in Florida, and the is in surprising shape, and I have had one truck bumper chromed 3 times locally in 14 years, looks fine when picked up, 3? years later its covered in rust. There is obviously a difference, how you pay for that difference, and get it, is a big guess IMO.

Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.