Miller had 34 TDs to 26 INTs as a Bear, McMahon was 67-56. Cutler is 114-81. Interesting that if you add their 2 sets of numbers you get 101-82, about 13 TDs less than Cutler with 1 more INT.
Wait, what about Orton, 30-27, maybe Tomczak, 33-47, Jim Harbaugh, 50-56. Kramer was probably the best at 63-45, and that ratio is still slightly lower than Cutler's. With 5 more wins, Cutler will be have the most wins as a QB in Bears history.