With AP, your results depend entirely on how you do on the AP exam in May. That’s it-- one test determines whether or not you’re likely to get credit. The college then decides-- get a 5 and your odds are good (depending on their AP policies of course.) Get a 4 and you may be OK, but get below a 4 and your odds are probably pretty poor on getting the credits accepted.
Dual enrollment means a local college will give you credit for the course. The caveat here is that the college you’re applying to can decide whether or not to accept credits from that particular institution.