Clo: This off the top of my head.
I assume Ryan will try to appear moderate, yet forceful in presenting his alternatives, while trashing and trivializing Obama's policies as misdirected and ineffective. Not sure how much he will simply ignore Biden's assertions. Make the conversation about his stuff, and Biden a second banana.
Biden best be prepared to face a repainted Ryan, not the dope we have seen preaching to red state tea baggers. Not sure what Biden will propose, if anything. Hope he isn't too subdued out of fear of being a loose cannon or making a serious error. Biden must also be aware that he trashing Ryan does not equal Ryan trashing Obama. The adversary is Romney.
Ryan can play offense. Biden must play defense, I fear.