Is Ponder an upgrade over McGloin as Raiders' No. 2 Quarterback?

Daily Raiders blog for NBC Bay Area website: Christian Ponder has been signed, presumably as the No. 2 QB to back up Derek Carr. Is he an upgrade over Matt McGloin? http://www.nbcbayarea.com/news/sports/Raiders-Bring-in-Ponder-to-Back-Up-Carr-296440891.html