I saved them as V4. Does LR have an issue with V4 icc files?
There are problems with v4 profiles and no benefit (at this point). It's not an issue on Windows but can be on Mac. Also note that the Lightroom print pipeline and the Aperture pipeline on Mac is slightly different. I won't say the ColorSync pipeline is tweeked to always do the right thing for Aperture, but I will say that Aperture tends to be tweeked to always work with the ColorSync pipeline. If you re-save the measurement data as a v2 profile, I suspect you will see different results.