in the index of foods in the national nutrient database, there are over 300 foods with more Vit. B1 than raw oranges, which shows up on page 7 of the list.
Like Bananas, which are actually mediocre for Potassium, many foods have unwarranted reputations for certain ingredients.
Now if you eat frozen concentrated orange juice like sherbert, then you'd be onto something.
http://www.nal.usda.gov/fnic/foodcomp/Data/SR18/nutrlist/sr18w404.pdf