Twisted Longbow has a better ratio, but I'm thinking that this is a better bow and the ratio is wrong. It might be calculated based on raw damage and not the added damage (fire,ice, magic..)
Glimmering Recurve Longbow LORE ITEM MAGIC ITEM Weight: 4.0 Size: LARGE Slot: RANGE Damage: 30 Delay: 36 Ratio: 1.2 Amazing Damage Bonus: 13 (lvl 65) Comparative Efficiency: 101 +4 Fire
I found one in the Xegony Bazaar for 700plat and I snatched it up. It was the morning after the last patch and there were only around 250 traders and one I guess was in a hurry, so I took advantage of it. Two days later I went back and looked it up to see how much it was going for then, and one person was selling it for 8k so it's safe to day I'm not complaining.