These are measured in loaded condition: with everything the owners were carrying in the trailer, varying amounts of fresh water, varying amounts of waste water, varying amounts of propane and lots of variation in equipment.
It looks like chinaski has already figured out that in this list a 19' is shown as "dual axle".
Originally Posted by chinaski
Gives me a good idea of what to expect. Range for the 19 is from 220 to 480 pounds. I'm guessing that with full propane and two batteries it will be closer to the 480 number.
It could be in the upper part of that range... but unless you are comparing everything in all of these trailers to your planned configuration, you don't really know.
480 pounds is not some sort of limit - it's just the highest value that was observed in this small sample of Escape 19' owners. If someone had not shared their 480 pound tongue weight in 2014, it would look like 460 pounds is the top of the range; for all we know one of the vast majority of owners who has never submitted their tongue weight is running over 500 pounds. If you choose the options that lead to the highest tongue weight (dual batteries is the biggest factor in that), don't have any fresh water in tank, have full waste tanks, and carry a bunch of heavy stuff in front of the trailer, you could certainly go higher.
220 pounds is not a limit either (although it is extraordinarily low for a 19'). If someone had not shown up in Oregon with their 220 pound tongue weight, it would look like 240 pounds is the bottom of the range. These values are already less than the trailer's tongue weight empty and with no options; someone out there may be teetering around the roads with even less on the tongue, probably due to a big box or cargo or stack of bikes on the back. If that 220 lb trailer had a single battery and empty propane tanks, and you did exactly what they did but added dual batteries and full propane tanks, you would be still be at about 310 pounds of tongue weight... and you could go even lower.
I think those actual loaded weights provide a good reality check for people who have unrealistic expectations (such as being barely over the dry and empty weight), but they don't tell you what your trailer will weigh.