It is likely that one with a dvihetuka patisandhi may not be able to fully get rid of the 10 types of micca ditthi. For someone to really believe in something, the REASONS for believing must be become clear.
– That is really the difference between blind faith and true faith based on understanding.
This is sort of like the following: Suppose one learns a complex mathematical procedure, but the understanding is not complete. Then he/she may be able to solve some problems, but will not be able to solve a problem that requires the full understanding.
So, one with a dvihetuka patisandhi may not have the wisdom to fully get rid of the 10 types of micca ditthi, and thereby to comprehend Tilakkhana.
However, I MUST point out that this issue of determining whether one has tihetuka or dvihetuka patisandhi is very TRICKY.
The story of Ven. Culapanthaka from the Tipitaka is an excellent example. He almost disrobed because he could not even memorize a single gāthā after trying hard for months. His older brother, who was already an Arahant, became frustrated and asked him to disrobe. He apparently thought that Culapanthaka had a dvihetuka birth.
But with Buddha’s help, Ven. Culapanthaka was able to attain the Arahanthood in a day, and simultaneously developed abhinna powers too.
So, it is best not to worry about this issue and strive to the best of one’s ability. Even if one has a dvihetuka birth, one can make a lot of progress and make conditions for the next patisandhi to be a tihetuka one.