They're kinda similar in that they're both tempered glasses - where you create residual compressive stress in the outer part of the glass which makes it stronge

They're kinda similar in that they're both tempered glasses - where you create residual compressive stress in the outer part of the glass which makes it stronger. However, there are different ways to temper glass. Superfest (and Gorilla Glass in smartphones) uses an ion-exchange technique where sodium ions on the surface are replaced with larger potassium ions. I'm guessing that Duralex uses a thermal tempering process where the glass is heated very high and then rapidly cooled to temper it, but I don't know. Maybe Duralex also uses an ion-exchange and it just isn't as good as the Superfest process. Even with smartphone screens, newer techniques from Corning have created much stronger screens than we had 10-15 years ago even though they're all using the same basic ion-exchange technique. Personally, I love tempered glass even if it might break. They're a lot less likely to break, they're less dangerous if they do break, and they don't really cost that much more. Maybe you'll pay $3/glass for regular soda-lime glasses and $5-6/glass for nice tempered ones, but I bought my tempered glasses a decade ago and still have all of them, despite having moved 3 times (and my packing technique doesn't involve bubble wrap or anything). Maybe Superfest is better, but for my non-restaurant use, tempered glasses like those from Duralex or Bormioli Rocco seem to be good enough.