I'm under the impression they are but both suck!!! On a twin engine V bottom it's probably from 1.2 mpg to 1.4 mpg at cruise....my motors are built and get closer to 1.0 to 1.1 even though they are EFI.
Calibrate itself ? Kind of but not as much people think. Does it really watch and control A/F ratio ?
Carbs can do a tremendous job metering fuel. Many don't give them enough credit, then again, some give them too much credit. LOL.
Boats are different from cars, therefore we need to treat them different along with our facts/theories/and opinions. Some are true and can be interchanged of course.
How is tbi like a carburetor ? It has injectors, computer, and sensors. It does not have boosters, fuel metering orifices, floats, needle's and seats, or anything else like a carb that has input on fuel delivery. Just because it mounts in same place as carb does not mean it's the same.
You can say that it typically uses carburetor or carburetor type intake manifolds though.
Just in case you think I'm pushing buttons I'm not. Just throwing some info out there. You've had enough excitement here recently. LOL.