I bought a BBK pump and it did indeed say walbro...same thing. I'd get a walbro if I were you. I'm sure they're all the same specs - much how summit uses things and sells them cheaper than the manufacturer, but it's the same exact thing.
BBK and Edelbrok are owned by the same company, so that would explain why their info is all the same.
Speaking of pumps, I bought my BBK 255 lph pump last year, the car has been down since and the pump prob. has less than 5 hours maybe 10 hours max of run time and it crapped out - call it bad luck - but that kinda blows...