I would feel better if we could find a bowl with a label. Antique Helper has several attribution errors, so I never trust them without some other form of documentation. But it gives a direction to look. If Ripley feels the glass is Murano, it most likely is. The bowls in the link almost look like stretch glass. I'd not seen them before.
This is not meant to insult Antique Helper. They do a good job, but handle a lot of things, many that are difficult to attribute. It's commendable that they don't make more mistakes.