Benford test can easily fail just from the polling locations being mostly similarly sized. It's not a good test, it won't detect systemic cheating like +100 in every precinct across the board, or a counter throwing out all the Trump ballots, or a single huge fraud in one field.

The other report is much better especially the chart with Chester county. A county with more republicans that went big for Biden - no way. I bet they just swapped the Biden/Trump results so Biden got Trump's votes.