Some of you guys are not on this planet. Gsp was quicker and more accurate in the standup, bisping is one of the best strikers in the UFC. Gsp was stronger and able to take him down at will. Bisping has a great active guard but your still loosing from that position. He checked him standing, wrestling and finally submission. My money was on bisping, not because of age and all that crap but because he is actively fighting and the top level constantly with no time off. GSP came in with zero ring rust and looked as good as ever. Looking gassed means nothing, you can't tell how much someone has left by how they look.
I suggest you go back and watch his earlier fights, he was slow predictable in comparison and Michael bisping is nothing but a journeyman with a belt. Yeah bisping is tough and durable but most successful journeymen are.
The old GSP could level change, shoot, strike without any signal, its what made him so hard to fight. He looked composed and measured distance very well Saturday but he telegraphed everything, no way hes taking down Romero, Jacaare, Weidman, Whittaker maybe but he's getting straight back up where he does. His first fight back after 4 years out but he needs to improve to beat anyone other than Bisping who was definitely the easiest fight for him.