I think I have Lent A Williamson as well, so I have also been studying the two. I personally think yours looks a little more like Alcazar. (I am going by the shade of purple it looks like which could just be a lighting thing) It may help if you had a pic that was at a different angle so you can see into the bearded area with the hafts showing well, I can tell a big difference in the way the lines under the beard are in other pictures. See how mine has almost a reddish glow in the hafts and a more noticeable white line under the beard. While Alcazar the lines go further down on the sides.? Not sur eif I am explaining it right.
The more I look at yours, I am starting to see that faint white line that is under the beard. A different angle would make it easier to tell.