I haven't been keeping up with Runaways lately, so I don't know what's changed since Victor joined, but both teams have their current rosters (except Chase has his old Gauntlets).
Thats a tough one especially with Vic on the team. However the Young Avengers just seem on the whole more powerful and they work better as a team. Id say the Young Avengers although i prefer reading Runaways
I'm not so sure...Victor was able to bend a ton of metal with ease with his electromagnetic powers. One word would be needed from Nico, and a member of YA would be screwed. Molly was able to rip the cloak off Cloak and knock Wolverine on his ass, I think that he is able to take Hulkling. Gert and Old Lace are probably able to take the Hawkeye/Mockingbird/Whatever-girl. It seems to take some degree of concetration for Wiccan to use his powers. I think that Nico would be able to take him out before he could fully utilize his powers.
The teams nowadays are like this?
Stature, Whatever-girl, Wiccan, Hulkling.
VS
Nico, Chase (does he get the Leapfrog?), Molly, Victor, Gertrude and Old Lace.
Runaways. The YA ar ea bunch of stubborn punks who do what they do as more of a hobby. The Runaways have survived more hardships together, and with Victor the Mini-Magneto on the team, they take this fight.
Nico owns Wiccan because her spells are faster.
Molly and Old Lace should take Hulkling, he hasn't impressed me so far.
Victor zaps Stature.
Gauntlet boy takes out the Hawkeye wannabe, he just has a better ranged attack.