Jenny Quantum/Doctor vs. Wanda/Strange would be unbelievable. I have no idea who would win, but the winner of those 4 takes the fight pretty much.
Thor is the next best in this fight easily, but after that there's a steep drop-off in the Avengers' power. After Thor, Apollo, Jack, and Angie are probably the next most powerful.
Great fight really...but again, it comes down to who wins in the "uber" category. Avengers probably have a slight advantage because Thor could feasibly help out Strange and Wanda if the rest of the team can keep the Authority busy.