These percentages are largely irrelevant because coal remains the only non-intermittent source that Germany can rely on (in the absence of nuclear), and it's so much more carbon-intensive than the rest that the average figures are still terrible.

Because of the intermittence problem, there is simply no chance that Germany can catch up with the best gCO2/kWh results (France and Nordic countries) without an hypothetical breakthrough in battery storage for renewables. Its electricity's carbon intensity is currently 5-10 times higher. Pretty much only Poland is doing worse.