Walker would win by 3-5 points against Warnock. If the black vote were to shift by a somewhat-hefty margin in Georgia, the blue wall there would collapse. Not to mention he would have preserved the Trump coalition with Trump supporting him so early. He's also inoffensive to the Suburbs, and they would swing-R with this being a non-presidential year, and Warnock would get under 70% of the vote in Fulton. The Georgia Legislature also putting in reasonable voting laws after all this time (which should have been put in place before 2020) will also be a factor in this race.
Other mentions of Walker's strength as a candidate include him being one of the most popular athletes of Georgia, well-spoken, and having a relatable lifestory. In 2022, the stories the MSM will be writing articles about is how GOP minority-candidates (Like they did in 2020) were a big part in taking Congress to Republican hands. Walker will be one of the front-faces of this.
Impressive you wrote this all with only one hand.