I have kids, and not just any kids. I have gamer kids. My daughter has advanced gaming skills. I had the choice of piano lessons or gaming and I went with gaming.
She's great at platformers and the like, but MySims Sky Heroes is not for young kids. The controls and varied weaponry are better suited for ages 8 to 31. I call it more of a Mario Kart in the air which makes it more difficult. Navigating 3D space, maneuvering around tight structures and completing objectives in a short amount of time are not gameplay elements most 8 year olds can navigate.
Be that as it may, I give it a 7 out of 10 for actually bringing somewhat of a challenging and fun kiddie styled flight fragfest to PS3 where there is nearly nothing for it to dogfight with right now. There are quite a few kart games on PS3; ModNation Racers, Sonic and Sega Allstarts, Madagascar Karts. The airspace is clear. No bogies in sight. Give it a rent, its pretty tight.