Standing on the sideline, scowling and gingerly holding his bandaged right arm, all Brett Favre could do was watch Tony Romo impersonate him. The kid was good. Too good for Favre and the Packers. The Wisconsin native who spent all week denying Favre was his childhood hero sure played a lot like a young No. 4 Thursday night -- full of moxie and joy, but needing a bit of a high-wire act to send the Cowboys past the Packers 37-27 and into the lead for home-field advantage throughout the NFC playoffs.