Here are the results from the previous round:
Wolverine vs. Gambit 16-11
Spider-Woman (Jessica Drew) vs. Spectrum (Monica Rambeau) 13-14
Loki vs. Gamora 17-10
Captain Britain (Brian Braddock) vs. Mystique 13-14
Nova (Richard Rider) vs. Beta Ray Bill 18-9
Groot vs. Valkyrie (Brunnhilde) 9-18
Cannonball vs. Iceman 14-13
Blade vs. Ghost Rider (Johnny Blaze) 15-12
You vote for the one who you like more, not who's the strongest in a fight and have fun:
Loki vs. Cannonball
Valkyrie (Brunnhilde) vs. Wolverine
Blade vs. Spectrum (Monica Rambeau)
Nova (Richard Rider) vs. Mystique