> There is a SARE grant that compared overwintering success for packages using the in-package queen, vs requeening with a local queen, vs a local nuc.  They found that 20% of packages were ready for spring come the following year, vs 60% of requeened packages and local nucs.

If you mean this, you got the numbers a bit wrong. 

> Over the two-year trial, the 9 of the 13 requeened package colonies successfully survived (69%) compared with 5 of the 13 conventional package colonies (38%).  The northern nucs showed the highest survival rate (10 of 13 or 77%).  Disease and parasite loads were higher in the packaged hives than the “nucs”, not surprisingly leading to the higher mortality rates in those colonies.  

> Interestingly the requeened packages seemed to better handle the higher disease and parasite loads than the conventional packages.  Greater disease resistance, genetic adaptation to the northern climate, and the management technique of “breaking the brood cycle” through the process of requeening may explain the increased rates of survival and strength of the requeened packages over the conventional ones.

> Erin was pleased with her results and the outcome of the project. However, in an interview, Erin made it clear that “a bigger, more formal study is necessary. This study was small, and didn’t ‘prove’ much…I can just say that these were my results with 54 colonies over 2 years.  Somebody should do a ‘real’ study on just packages, requeened and not requeened based on my project; that would be worthwhile”.   

http://smallfarms.cornell.edu/2012/01/09/establishing-northern-honeybee-colonies/

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