I understand why there was a need to respond. I had considered that the Liberal Party sends a stronger a message by not responding; by rising above the attacks of the Conservative Party. But that is exactly how the Party responded to attacks made against the characters of Stephane Dion and Michael Ignatieff.
The contrast between the Conservative and Liberal ads is quite blatant. Trudeau is attempting to frame himself as the softer of the two leaders. He is the one that understands Canadians. He isn't the career politician that Harper is. He is a teacher. And by setting the advertisement in a classroom he is embracing that title.
But will this ad be effective?
Frankly; I'm not certain. Most polling demonstrates that Canadians have already formed an opinion of Trudeau. That is to say, there are very few people left to convince that Trudeau either can, or can't, do the job of Prime Minister. As such, I doubt the Conservative attacks were all that effective either.
For now, anyway, 2015 is still a long way away. If these series of advertisements have taught me one thing, it is this: the Conservative Party of Canada is terrified of Justin Trudeau.