if its Borg vs new series Cybermen, the Cyberman wont last 5 minutes. Even if the Borg will never be able to use love as a weapon against them
Allyn's post says they're teaming up to lay a smack down
Admittedly, that's just a supposition on my part, based on the way team-ups like this work -- the villains team up forcing the heroes to team up to stop them. Since Bleeding Cool
said the crossover would feature the Borg and the Cybermen, then it followed that the Borg and Cybermen would team up to destroy all creation and only the combined forces of the TARDIS and the Enterprise
-D could stop them.
But it's really just a supposition. It's entirely possible that the Borg and the Cybermen could be at war and the Doctor and Picard get trapped in the middle.