I tried both versions last year. Both were fresh and flavorful if a little heavy on the mayo but I preferred the wrap over the bread.
This year, Arby's is promoting the wrap with a $10,000 giveaway. The object is to collect points via social media (i.e. Facebook, Twitter, Foursquare, etc.) which are then entered into a drawing for $10,000. Additionally, the points can be redeemed for prizes like Arby's gift cards, shirts, and what not. You can get the details at Arby's Facebook page.
Nutritional Info - Arby's Pecan Chicken Salad Wrap (257g)
Calories - 630 (from Fat - 370)
Fat - 41g (Saturated Fat - 6g)
Sodium - 1020mg
Carbs - 46g (Sugar - 9g)
Protein - 30g
Nutritional Info - Arby's Pecan Chicken Salad Sandwich (311g)
Calories - 840 (from Fat - 400)
Fat - 44g (Saturated Fat - 6g)
Sodium - 1220mg
Carbs - 82g (Sugar - 20g)
Protein - 34g