Wasn't saying that. Was saying neither was 100% original. One picture of each is not a fair way to tell. If I seen each in person betting tell without looking inside.
John, you will have to live a Very long time for rust to appear in AZ

. For me, I would want the steel tub; not for resale mind you but rather knowing it’s the original— it can be a little (very little) rusted but that would not matter to me. And yes, patina appreciation is my favorite thread even though OregonFJ decided to do a repaint (sorry for the “semi-hi jack”)
Depends on the location. Have a 73 FST that had two small rust spots in the rear corner. Been watching for twenty-four years to see if they will grow. Nothing so far. Have four more FJ40s and another 62 FST tub that are all in better shape. All can see the original spot welds over the wheel wells since none have ever had any repairs. Biggest issue I have is filling in holes from POs. Not many advantages of living in the Southwest but lack of rust is one of them.
It also sounds like the OP is planning on flipping once restored so rust down the road won't be his problem. He is asking about resell value not which will hold up better.