If you had 4,000 points to stay at a 2-4,000/night property, you now have 12,000 points.
Of those 115 SPG Cat 1 properties (presumably), 61 are now 9,000 points and 54 are now 12,500 points. So on average, 9,850 points.
Some places you save points, some places you lose points, but its basically a wash.
Going forward, you earn 10 points per dollar rather than 2, so the cost to earn that many points going forward is cheaper (for base members, no elite or other bonuses).
I don't have the details on the credit card - I have heard that it took a bigger hit than the program itself, you you may have lost out on future earnings if that's your sole source of points.