i would give the poke body 9/10, it would be perfect if it also eliminated all trainers in game, like staduims and pokemon tools, but its already useful
as for the attack, 7/10, 70 damage for 3 energy is very good, but the effect is not easy to activate
it has pretty good hp, but the downsides are : the retreat cost; in a hard and long game, 2 energy are a lot, also it dont have resistance, which reduces the chances of a longer battle
overall, its a good card that im sure i would have on my deck =]