No, it's just how fast the particular food raises your blood sugar. I assume they both are about the same? Best thing to do is follow the general rule that seems to always work for everyone, though people have varying difficulties at first. Some don't. You need to find a carbohydrate level that's comfortable for you at first, and it needs to be within 60-100g, no more no less. Sometimes people feel they need more or can function on less, but you need to start there to figure it out.