Why not email the guy at www.growitalian.com I bet he would have the answer!

I know this is an older thread, but for the sake of posterity, I thought I'd leave a response. I e-mailed growitalian.com, and the owner said that it's "probably the same, or very close". What he sells is a deeply ribbed zucchini from Rome with very good flavor. However, he can't guarantee it's the same, as one can get surprisingly different results from different seed sources.

I have always had great experiences with Franchi seed, so I'm torn. Whenever I've bought heirloom seed from them, plants have been way healthier, more consistent, and more productive than the results reported from seeds from "artisan" American sources, with no loss of flavor. Unsurprising if their primary target is the very demanding Italian market.

If I have the space, I might do a side by side grow-out to assess any differences.