Trump has lied. Then he's doubled down on lies. Then he made up a new chart to justify his lie. (One example).
This entire diatribe collapses, since Trump says things which are true on occasion. This isn't a game of two doors, two guards, one who always lies and one who always tells the truth.
It's one person who repeatedly contradicted herself on the matter, one one person who didn't contradict himself. One of them is
guaranteed to have lied (I'm ruling out a
Schrödinger's Sex With Trump scenario for the sake of the argument). The other one is
likely to have lied.
I see no reason to propose that Daniels is more credible than Trump in this scenario. She is
guaranteed to have lied.