Girls because of the Phoenix, while it is possible for Strange to defeat such a cosmic force it's about as likely as him beating Galactus single handedly. while the other members of the boys teams are more powerful then the people on girls team I think that they prevent the boy team from gaining the edge that they need to combine forces and overpower the Phoenix.
On the other hand Surfer, Kyle and Fate might be powerful enough to take out Scarlet, Raven and Zattana quickly enough to come to Stranges aid. But no even if all the heroes on the boys team combined forces they probably wouldn't be able to stop the Phoenix.
And a blood lusted Scarlet witch is very dangerous She'd probably take out at least one of the guys out.
I'd say the girls take 7/10 here.