>>712819637
That is a retarded proposition for two reasons.

1. he leaves behind Azem's crystal and its power, clearly intending for you to have it should you best him and inherit the star.
That is not something someone who is 100% resolute in beating you would do.

2. HE FUCKING TELLS YOU WHERE TO GO TO KILL HIM
Emet literally would have won if he just hadn't told the WoL he was holed up in the Tempest, or if he'd shard hopped, or gone to the Empty.
He specifically chooses to spur you on to kill him and prove him wrong even when his victory is guaranteed.