Nah, isn't necessarily the better deal. See, if you get Epic Mickey for example plus another game that is at regular price (then, with half off even), subtotal before tax is about $80. Then with tax, it's nearly $85. Were you to get Epic Mickey and wait for your $10 credit to kick in, then you could get another game for $10 less, plus no tax or shipping. In certain cases, you're only saving between $3-5 going the Toys R Us route, and in some cases, you actually lose money. Also, you can't get Epic Mickey AND Donkey Kong under that promotion.
That's exactly what I did yesterday--got DK Return and Epic Mickey at Toy'sRus. I was going to use the 5 dollar off $25 coupon that came in from Toy'sRus a while ago, but found out that video games are among the exclusion items now:(
Just dance 1 is better than just dance 2. It seems like they ran out of popular songs to use because they used all of the classics on the first one. Personally I was disappointed with the song selection.