It is a fact, as I see it. The financial benefit will clearly be greater for high-income families because the very nature of income splitting makes it so. If the objective is to provide families with support, this may not the best way to go. But if the objective is horizontal fairness, in this case, the changes, the new income splitting measures, are much better than in the original proposal.
On May 28th, 2015. See this statement in context.