Would you consider professional flirting a power? Idk
Zen’s the guy you’d go to if you need some help in hand-to-hand, blade-to-blade combat. Replication is his main thing, and it comes in handy when tackling the bigger, badder villains. The clones however, only possess his base proficiency at combat and flirting and none of his other powers. He also has a sporadic Psionic Intuition, which allows the team to see glimpses of the future (psychic dreams anyone?). Albeit fleeting, Zen tends to be extra sensitive to the bigger-scale, future-altering, history-making events. He might not be able to see how well you’d do in a test, but he’d definitely see Godzilla rising out of the water a couple days or weeks before it happens, so don’t worry. :D
Adoptive Muscle Memory is less of a power and more of a skill he developed. Quick perception and hella body-eye coordination allows him to study your moves and learn them with time. Short battles are of no use to him, but if the duel is extended or you come back for a rematch, then watch out bc he’s probably got all ur moves figured out.
Yes, I did the math and estimated that his sword would be about 0.84m long in proportion to his height, which I think was about 5″9. I’m extra that way.
Never forget, that in the Battle for the Cowl story arc it became privy to readers that Jason was the survivor of some sort of unspecified abuse from his time on the streets. That this was something that Bruce willfully ignored and simply gave Robin to Jason as an outlet rather than professional help. To a child as young and impressionable as Jason, it must have caused unwarranted shame. Remember that this was something Bruce was never man enough to address, and literally waited after his own ‘death’ to even acknowledge. So he left a godamn hologrammed message. No wonder the pre52 Jason’s characterization was so much more psychotic.
For all the bravery and strength Batman represents, Bruce was a coward.