Please give some examples of items and the stats you're looking for. At the moment I'm not sure if you're looking at the right
webpage files, but perhaps your examples will show a bug in the program that generated the webpages.
Level requirements are given for Uniques, Sets, Gems (Runes are also on this page), White items, and Magic Prefix and Sufix tables. Runewords don't include level because that depends partly on the base item. I didn't include damage, stat requirements, or defense on Uniques and Sets because they were a hassle to include and change as the item is upgraded anyway (damage and defense are generally about double the white item stats, so shouldn't be too hard to look up).