So what are the kids powers - have we seen him display any other powers other than the red eyes?
He might not necessarily have Homelanders power set. Given Homelanders laser vision just scorched Stormfront and the kid obliterated her, maybe the kid has Cyclops type powers?
Homelander obviously did not use his strongest laser on Stormfront. We saw him reheat a bottle of milk without damaging it so he obviously has extremely precise control on his eye lasers. Given the fact they were playing around I don't think he was actually trying to hurt her too much.