So we go through all this trouble getting different hosts making different sites look like they ar e not owned by the same person... Then after all that is done we slap on Adsense code on all the sites from the SAME Adsence account. I am pretty sure Google can figure out these sites are owned by the same owner / entity with X sites using the same Adsense code
yes you have a point, however I don't think google takes information from the adsense accounts when pageranking domains by same or different C-classes..