both are pretty close but A looks to have a better overall efficiency, but again it depends on what power level you're looking for and how much capacity you engine has to flow the air. if you're trying to pick a turbo by compressor map then you need to know a rough estimate of what your engine can flow or you're still just picking blindly and you won't know the difference unless you buy both and compare.

what are the maps for btw? what models/trims and such?