Arrange in heavy large roasting pan. Scatter garlic around hens. Roast hens 25 minutes. Pour wine, broth and remaining 2 tablespoons oil over hens. Continue roasting until hens are golden brown and juices run clear when thigh is pierced at thickest part, basting every 10 minutes with pan juices, about 25 minutes longer.
Transfer hens to platter, pouring any juices from cavity into roasting pan.
Tent hens with foil to keep warm. Transfer pan juices and garlic to heavy medium saucepan. Boil until reduced to sauce consistency, about 6 minutes. Cut hens in half lengthwise. Arrange on plates.