Television CGI isn't going to be nearly as good as Pixar quality. The animation is quite an improvement over Jimmy Neutron, that's for sure. Watch some of the earlier JN cartoons, and you can see just a little strobing in between movements. My only issue with the animation is that the humans tend to look pretty stiff emotion-wise, while the turtles, Kraang, Splinter, and other mutants are quite a deal more expressive. I'd put the animation on par with (and I assume it's the same animation company as) Kung Fu Panda: Legends of Awesomness. Not half as good as the theatrical films, but we're talking about a 90 minute movie that takes over the course of several years to make vs a weekly 30 minute cartoon series which takes just under a year and a half long production period that has to be outsourced. But I've seen worse television CGI. It's definitely improved since Reboot's day.
I kinda wish they did it in 2-D, though...just as long as it's not flash.
I kinda wish they did it in 2-D, though...just as long as it's not flash.