Good stats information. That's 2 out of 100 better for visitors, with 1/2 yard distance as well. What doesn't show in the figures is the choices made by coaches to punt, go for it on 4th down, or try the kick. Over the years, I've watched visiting coaches opt out of attempting FGs in bad weather a lot more than I have our own coaches. Therefore, the figures could easily be a tad skewed based on weather.
In other words, since the stats are that close, it comes down to coaches perceptions, and it seems the Packer coaching staffs and front office has seen it necessary to pay him the salary they do. I can see doing a rework of it, or cutting him after this year, but the idea that he should be dumped is not realistic. Top level kickers are not that easy to find. They don't just happen along every day.