Precisely, PB, and then there's the fact that a 1-sector duty becomes a 2-sector duty, although on a very long haul that's probably not an issue.
One possible factor in the other direction would be high uplift prices at the start point, and low prices at the tech stop point.
And if you have 3rd, 4th or best of all 5th freedom rights at the tech stop point you are creating many more revenue earning opportunities. But if you can fill the aircraft end-to-end anyway, that's not much of a gain.