Deadliest: Wolverine got Sabertooth, Batman got Joker. So I say split, or small edge to Batman
Most powerful: Wolverine hands down. Sabertooth, Wendigo, etc. And I don't know if it count, but Wolverine already went toe-to-toe with the friggin Hulk too.
Most tactical villains: Batman by a landslide. Only Norman Osborn is worth a mention here.
I am in your algorithm learning all your mannerisms
I'm already level with God
A million words a second and I know your imperfections, baby
I'm the only future you've got
Speak in diatonics, motivation diabolic
I'm like a religion, better locked in a box
Picture perfect image, more powerful every minute, baby
I am everything that you're not
If you were to throw all of Spiderman, Wolverine, and Batman enemies in a dome and had them fight it out...who's villain would come out of the dome as the winner.
I am in your algorithm learning all your mannerisms
I'm already level with God
A million words a second and I know your imperfections, baby
I'm the only future you've got
Speak in diatonics, motivation diabolic
I'm like a religion, better locked in a box
Picture perfect image, more powerful every minute, baby
I am everything that you're not