Well, with V-8 and other vegetable and/or fruit juices you get some of the antioxidants, but you miss out on the healthy fiber (you could supplement with psyllium fiber, but whether that makes up for the whole difference, I'm not really sure. A dietitian probalby would have more answers).
Cooking destroys a lot of nutrients, so I'd consider a universal allergy to virtually all raw fruits and veggies a potentially serious dietary disability. Ideally your insurance would cover at least one visit with a dietitian to address your specific dietary needs.
Your doctor may be able to justify to your insurance at least one visit.
If you don't have medical insurance, sometimes you can see a dietitian through the health department at a reasonable cost.