Yes, it was American in style -- i.e. a sleb endorsing a candidate, but the whole leadership debates are very Presidential, which I really don't get. All of the leaders concerned, are in the HOC and can debate the issues at PMQ. There is really no equivalent of such in the US, so makes sense to have the candidate debates. PMQs is democracy at its best.
But there seems to be such inertia from the public about the general election. Yes, the economy had hit a lot of people hard in the face, but can't see what the other parties would have done that's drastically different from what the government did.
Second/third what others have said about agreeing about it being true not being fooled by Cameron. He seems like a nice guy. The social veneer makes his policies seem mild, and while I'm sure he's a nice guy, just don't want him or his party in power.