We know Sir Martin Sorrell can talk a a good game about the state of his giant ad umbrella firm, WPP. But along with earnings calls and various positive financial reports to serve as tangible data, there are other criteria to look at when it comes to determining which holding company truly stuck out in 2010. There are layoffs/staffing to be considered, as well as acquisitions, expansion, innovations, account wins/losses and of course, the work itself. So we ask you this broad question, AgencySpy readers. In heart of hearts, which of the major holding companies fared best in 2010? Of course, there are always the indie agencies to be considered, including Wieden + Kennedy and others. We just figured we’d lay it all out there as the year draws to a close, so please consider carefully, click the link right below, take your pick and indulge our curiosity for a minute if you please.