Didn't get the issue yet, but saw scans. This was considerably less epic than I was hoping it would be. Cheetah vs. Chiang Poseidon would have been AMAZING. What is this old man in a lighthouse nonsense?
The First Born is only one dude and not half the rogues gallery
It's not like Lex is creating these weapons for them, he's just pointing out where these pre-existing plot devices are and outfitting the whole group. It's the Legion of Doom in a JL book and he's the leader, that's his role. I don't know that Cheetah is any more weak than all the other Legion members. It's just that this execution looks very underwhelming compared to what the premise lead us to believe.