Not exactly. At DL, the 7ER pays abour $15/hour above all the other NB's (except the 321-NEO, and likely the 73Max when it arrives), which is not as "high paying" as the "true" WB categories I will grant. Because the 7ER category is mixed with NB and WB airframes (757 & 767-300) I would never argue it's a WB category, but it does contain WB's. This a source of debate even amongst ourselves, exclusively because of the pay difference and the "discount" on 763 flying the company gets as a result.

However, the category will be around past 2030 at least, and absolutely does WB type trips on the 76-300. Other than payrates, 763 trips are otherwise identical to the 330/350/767-400 (at DL, the -400 is a separate WB-only category). Further, as Sliceback alluded to, DL has already started retiring the 763's - 6 of approximately 45 remaining will retire next year - no word on how fast after '24. They will all be replaced by 330/350's, and will become the "highest rate" as replacements arrive.

At a minimum, it's a "tweener" category, which does some WB flying. Again, I'm not necessarily arguing it should be in a WB-to-WB comparison without caveat, but just wanted that clarifiation out there.