Have you seen Agger's clean sheet record from last season?This is such a illogical argument it beggars believe.
So you're saying Lovren WAS good last season but playing badly this time so therefore the team is worse off because Agger is a better player? What? So how well has Agger played in the PL this season? Oh, you can't tell because he is playing in the PL? Did Agger play well last season to justify his place for this season? Obviously not because he's not playing in the PL. This logic applies for Lambert and Aspas (remember that corner???) and frankly Moreno being compared to Aly is just plain wrong.
Look at it from Rodgers point of view at the beginning of the summer. Who had an excellent season at CB? Simple - Lovren. Could he foretell that Lovren wouldn't play well this season? No, unless you claim foresight so great it's better than hindsight.
In other words the 'WAS' argument is pathetic.
Him playing badly last season is just something you're imagining.