I'm not trying to challenge you, and so please don't take this the wrong way.
You cannot say that an Anaconda is more prone to bite then a Burmese Python. However, yes you may of had more experiences in that case, but if you did the calculations with the numbers that I've seen, I'm sure Burmese would be a lot higher in the "prone" to bite category. Please do not state that Anacondas are more prone to bite just because that may of been your previous experience, but instead say:
"In my handling cases with Anacondas & Burmese, I have been bit or nipped at more by Anacondas, instead of Burmese."
What you say makes attempts to make it a fact, and it's not a fact, actually far from it.
EDIT:
shescountry, even though a lot of us, or rather most of us on the forum have tame Anacondas, I still would recommend you doing a lot of extensive research before you purchase either, as neither of these snakes are the best choice of a first big snake. Though a male Anaconda would be the best choice of the two, if you were to get one because of the slim chance of it ever getting into double digits.