Sweet potato differences?

The other week I baked a few more sweet potatoes and ate them.

Only, these were sweet potatoes that I had bought at the store -- not at the farmer's market -- and I only ate two of them -- not five.

And, afterwards, I didn't shit a mat.

I think they were much less fibrous than the homegrown ones?

That seemed to be a key difference, beyond the difference in sheer amount of sweet potatoes consumed.

Perhaps they were a different varietal, as they say.