I usually don't care about things like this. There are always those media-proclaimed "kid geniuses" who can paint well. Frankly, a 6 year old who can paint abstract paintings isn't all that impressive to me.
However, a 3-year-old with drawing chops? That's a different story.
I'm not going to call this kid a genius. Art is different than music. Early talent doesn't indicate a future career. A toddler can play Mozart or Bach on the piano, but a toddler can never paint like Caravaggio. But his understanding of light and shadow and his brush work (finger work) is pretty great. Plus, the Teenage Mutant Ninja Turtles are cool.