Before their Home and Home Tour kicks off, we size up the superstars’ stats. By Gil Kaufman Eminem and Jay-Z Photo: Kristian Dowling/ Getty Images Cincinnati Bengals wide-receiving duo Chad Ochocinco and Terrell Owens refer to themselves as the Batman and Robin of the NFL, but in the hip-hop world, Jay-Z and Eminem are more like the Batman and Superman of music. And just like it’s rare to see the two titans of comics together in the same panel, you know it’s a special occasion when Slim Shady and Jigga team up for a live show. That’s why fans are freaking out about the first of four planned joint concerts between the dynamic duo, which kick off at Em’s hometown stadium, Comerica Park , on Thursday night and wind up next weekend in Jay’s backyard at Yankee Stadium on September 12 and 13. Nobody knows who the pair will bring onstage as special guests or what they’ll play , though we did learn Wednesday that VMA nominee B.o.B will open all four dates . But how do the massive careers of these two titans measure up? Both have sold tens of millions of albums and played to hundreds of thousands of fans during their decade-plus in the public eye, and each brings a unique strength and style. Let’s break down their numbers to get a sense of what led up to this historic collabo: On the Charts Eminem has been a chart titan for his entire career, posting six #1 albums in a row on the Billboard 200, along with four #1 singles on the Billboard singles chart. According to Nielsen SoundScan, his U.S. album sales are 38.3 million, with an additional 30.5 million U.S. downloads on songs where he’s the lead artist. His best-selling download to date is “Lose Yourself,” which SoundScan reports has sold 2.9 million copies, while his feature on the Akon tune “Smack That” pads his r
