Here is my senario Cannonball is flying around in DC Earth and Steel Batman Robin Starfire Nightwing Atom Smasher Hawk Man and Hawk Girl see him and thinks him a bad guy they decide to attack him what happens
they just THINK hes is a bad guy....lol I could see it happening to...ok I dont know anything about Atom smasher could you provide info on him....
but beside him...so long as he has his field up, he is invulerable, and can absorb kinetic energy...so unless steel has a really powerful icebeam somewhere (ppfffft, then he would be cool like Ironman, having more stuff than just a hammer) Cannonball wins...
Already super-strong at his normal size -- 7-foot-6 -- Atom Smasher's strength and density increase proportionately to whatever size he chooses. (It was enumerated in JSA #75 that his muscles and bones actually break and reform as they grow in order to achieve these great heights.) The upper limits of Rothstein's growth spurts are unclear, but heights above 50 feet are believed to tax his molecular structure and could cause permanent cell damage. During his time as Nuklon, Albert was able to phase through walls; he has either lost this power in recent years, or it has been retconned away. Rothstein is also a skilled pilot and mechanic. In the first few years of JSA, he could be seen piloting the JSA's jet, the Steel Eagle, as well as the Star Rocket Racer in JSA: Our Worlds at War, and earlier being Infinity, Inc.'s primary pilot.
Cannonball wins then....if all this team has is varied forms of kinetic energy (batman, atom smasher, robin, nightwing= physical, Hawkman and hawkgirl=that mace, and Steel with=....his hammer) Cannonball becomes more powerful by absorbing that energy....and kicks all their butts