Team 2. WW's shown she can deal with Supergirl pretty easily, and she's handled Flash on several occasions. With Tornado as backup, there's a clear edge here.
From what I saw while flipping through JLA, I'd say she'd hold her own against Diana unless she pours on the skill. IIRC, I remember her stalemating Ultra Man and such.
It was admittedly a much more rookie Kara, but early in her own series, around when she got split into Good Kara and Bad Kara by Lex, Diana took her down in, like, five seconds.
Now she'll do better, but Diana wins.
Well, on that matter, Diana's defeated a Starro-controlled Wally, as well as Zoom, and has tagged Wally when he was unable to slow down.
I think I'm going to revise and say 7/10 for team 1. *If* Reddy can hold one of them off, either one, so that they can be taken individually by WW, team 2 can win, but if it goes to a double team then Diana'll of course lose.