I was just buying a ticket to CMH to HNL, but all of the flights are DL flight numbers flown on Northwest metal. I was wondering if that will earn me an SSSS? Since it is actually roundtrip on Northwest, I figured that this would help. I'm elite on Continental, so that's the account that I'll use for this trip.

Does anyone have any experience with this?

The DL codeshare ticket is thousands of dollars cheaper than purchasing a ticket directly from Delta or Northwest, hence the reason I'm doing it.