It's really interesting that John Tory has decided to make the main issue in this election leadership/honesty.
When the PCs make no substantial promise regarding fiscal policy other than more honesty, it means that almost all of the rest of their promises are the same as the Liberals, except "we'll keep them."
Well, when you're both promising to increase spending, I have no trouble believing that any Liberal will keep the promise. (The main reason I've never been a Liberal.) It would be different if they were fighting over who could reduce spending and lower taxes, but it's simply not the case.
If you're trying to stand apart from someone by saying you'll keep your promises, they have to be making promises no one believes they will keep. By promising spending increases, (and promising to keep the promise. What have elections come to, anyway?) Tory helps McGuinty keep his credibility and stops the PCs from controlling the issues.
One of the many reasons you will be hearing way more about the school funding issue (winning some Jewish votes in TO, but not too popular with others I've heard talk about it) than about honesty and accountability.