I could really care less about Duffy, I don't do meet & greets. But you can't compare him to Figment. Figment is a decades-old character with a great story and his own very popular attraction(s), and was the mascot of Epcot.
Duffy is a generic teddy bear solely created to sell you a bunch of outfits that they threw together a storybook for. Totally different, IMO.
Not knocking Duffy here. Really, if you like him, more power to you. But he's not a character like Figment. He's a generic stuffed animal.