Anderson's defense is his main problem these days imo. He's changed it dramatically. He brought in different coaches right before the Weidman fight and he abandoned his more traditional boxing stance he had been using. He's gone to that almost Wing Chun defense which has hurt him more than anything due to his chin not being as solid either. If he went back to a more traditional stance and punching style like he used around the Forrest fight i'd give him a good chance now. But Weidman still hits hard enough that Silva's defense would be an issue.