I think you are getting confused by healthy extras, fibre isn't taken into account for working out syns. Healthy Extras are carefully chosen by slimming world by a number of factors. Fibre being the main one for Healthy Extra B's. But unfortunately we can only use the ones they provide on the list as a Healthy Extra, there is no calculation to work out our own. However you can contact Slimming World to enquire if a food item you have found can be a Healthy Extra. But I would say looking at the nutritional information you have provided, slimming world will say it can't be, as the fibre is very low.
For syns, all the foods below, have NO free food allowance:
Alcoholic drinks
Biscuits, including cereal bars and savoury crackers
Bread & crispbreads
Breakfast cereals
Cakes & bakery items, e.g. carrot cake
Crisps & snacks
Dressings & dips, e.g. salsa, salad dressing
Fruit - canned, dried and stewed
Pastry products (sweet & savoury), e.g. salmon en croute, apple pie
Pizza
Puddings & desserts
Sandwich/deli fillers
Sandwiches and wraps
Sauces, e.g. jars of tomato-based pasta sauce
Soft drinks, including yogurt drinks fruit/vegetable juice and fruit smoothies
Soups, all varieties
Sweets & chocolates
which means you can work out the syns by using 1 syn for every 20 calories.
Anything else (i.e. foods WITH a free food allowance) must be worked out using the syns calculator.