Hi. First of all, no need for new thread, there are dozens of threads you could place this question.
The Champions League as you know it from newer PES games, does n't exist as standalone mode. The patch "transforms" the Champions League inside master league, regarding competition logo and name, but the structure is still the old WEFA Champions Cup (the equivalent of real-life CL in PES).
Also a lot patches, edit the KONAMI Cup, to CL, but still with some limitations.
I hope i covered you.