That doesn't say much without knowing how the fuel was used. They may have pushed it to the max to give Starship more room, therefore didn't save enough fuel for the booster's return. They may have set higher safety margin. They may have used more conservative thrust settings.
There are so many knobs to turn. Everything is conjecture because it's only the beginning. One thing for sure, Superheavy/Starship in the future -- a year, two years, five years from now, will be very different that what was used for this flight.
There are so many knobs to turn. Everything is conjecture because it's only the beginning. One thing for sure, Superheavy/Starship in the future -- a year, two years, five years from now, will be very different that what was used for this flight.