The "atom attribution from finger prints"-method developed by Riniker and Landrum, when used with a RF model fitted to Crippen logP values, gives atomic attribution heatmaps that are in reasonable agreement with the atomic contribution heatmaps of the Crippen logP model for most molecules, with average heatmap overlaps of up to 0.54. The agreement is increased significantly (to 0.75) when the atomic contributions are adjusted to match the fact that the molecular representation (FPs) is fragment-based rather than atom-based (the FPA ground truth vector). Molecules where the atomic attribution differs significantly from the ground truth tend to have slightly larger errors on average, but the correlation factor is near zero when considering individual molecules. Using a GCNN with the XAI method suggested by Maveieva et al. we generally found a worse agreement with the ground truth heatmaps reflected in an average heatmap overlap of 0.47.