As Cutter said in his post, this is in G&W favor. My friend plays ZZS and i have to say although ZZS does have a good glide toss G&W's glide toss is equally if not better than hers. Also most of G&W's moves counter her's (Clash) or go throw her moves. Just as Cutter said her up air and side be moves are good against G&W although G&W can kill her early with Dsmash, Fsmash, Usmash, and usually gimp her pretty easily.
6:4 Advantage G&W
6:4 Advantage G&W