As in most things, there's always a balance. On the one hand the privately sponsored refugees do tend to settle faster. On the other hand, the government-assisted refugees are very vulnerable people, and deliberately so. They generally speak not a word of English or French and have very little education.
We want to help the vulnerable people, and in a sense that's a good thing. However, once they get here, given those demographic attributes, it tends to take longer to settle them than it does the other group.