We did them back to back in September. I would choose Tutto Italia, hands down.
My teenaged son just wanted me to add the he would choose Tutto Italia as well, and he liked the Lasagna. He is a lasagna afficianado, as this is his go to order at Italian restaurants.
Via was SO LOUD! All the hard surfaces and expansive dining room, just bounced around the noise. It was difficult to carry on a conversation. In addition, the food was average at best, and several items were exceedlingly bland, one was burnt.
Via had thin crust pizza, which is not our favorite. It was, however, the best of the entrees we tried. Dessert was yummy we had fried balls of some cheesy batter with chocolate sauce and they were very good, but not worth an entire meal.
Both restaurants had very good service.
I had the short ribs at Tutto Italia and was very pleased with the meal. I had the Tiramisu for dessert and it was yummy.
Our family felt like Via Napoli was no better than Wolfgang Puck's restaurant in Downtown Disney, and that was just a counter service credit.
Have a great trip!