I don't know that the MS3 has been dethroned yet. While the numbers are good on the Cobalt in various tests, the MS3 might still have the advantage. Motor Trend mag. recorded 60-0 braking at 111ft. for MS3 vs. 115 for Cobalt. Car and Driver tested the MS3 faster from 0-30, 40, and dead even to 60 at 5.8 seconds. The fact we have to shift 3 times doesn't help and the no lift shift of the cobalt is a feature I wish we had. Road & Track recoded a lateral acceleration of 0.91g and slalom speed of 69.6 mph for the MS3 vs. 0.89 g and 69.2 mph for the cobalt. This battle will be definitely be decided by the better driver, but until more test numbers come out for the cobalt and a head to head comparison is done, I am sticking to my guns and saying the MS3 has the slight advantage performance wise. The looks and interior is a no brainer though, MS3 ftw!
I could only find my November 2006 issue which was their first test of the MS3. I do remember these numbers though.