Of course they're separate issues. You and Bardis agree about this!
If we agree, then how could this be our objection to what Bardis said?
What is the argument that Bardis is disputing? What is its Premise, what is its Conclusion?
SOME PEOPLE'S ARGUMENT
conc - violent TV imagery can cause violent behavior
evid - research shows that TV ads affect buying habits
OUR AUTHOR'S ARGUMENT
conc - violent TV imagery does not cause violence
evid - TV ads and violent TV are two separate issues
(E) is saying that our author is addressing a separate issue from his opponent.
But they're conclusions are on exactly the same topic! So they're arguing the same issue.