Bundesliga has better results than Serie A and took over the position of Serie A in latest seasons. Serie A's clubs are trying to come back but they have yet succeeded with the mission.
I would say that Bayern has better results than Serie A and that is why Bundesliga is above Serie A, but Leipzig made some nice results last season as well. Actually, last five season results are measured for the competition list, and yes Bundesliga is going up with nice runs from Bayern and Leipzig in Champions League
complete list with actual state can be found on the link
https://kassiesa.net/uefa/data/method5/crank2020.html
but on the UEFA site as well for the season
https://www.uefa.com/memberassociations/uefarankings/country/seasons/#/yr/2020
seems that someone (Bert Kassies) is tracking it in real time and adding changes after each round, Germany was above Italy prior to last season, but Bayern score propeled tham more, Spain is high above others, but when season 15/16 results are erased at the end of the season, situation could change, but all top four countries have four teams in Champions League (seven teams in total)