UP: Russia, by a landslide
UB: Vikings; Russia's is too late to help
UU: Neither are that impressive
UHV: Russia's is way too easy; Vikings' is way too hard
Ease of dominance: Russia (obviously)
Threats: Russia has some (a late Mongolia can be deadly), but Vikings have only very minor ones. Tie
Respawns: Neither neither has any
Conclusion: Russia (do these charts actually help?)