Could just be my crappy monitor at work but the picture above doesn't look like it has 3 tail stripes. It looks like there are just breaks in the one your looking at.
Also, tail stripes are deff a good IDing tool, but there are ST's with 3 tail stripes. If you look at the middle bar and ESPECIALLY the body shape (very tall) then there is no doubt thats a pulcher.
Are you referring to CT as controversial tiger, or cambodian tiger? I think you are saying controversial. But if you are questioning if it is a cambodian over a siamese then you may be right, when I say ST, most of the time I am just referring to Pulcher in general.