OP, if you take a look at the detail pics, you'll see that the GT and WT appear to be nearly IDENTICAL frames, with different forks. The geometry charts are identical.
The discussion is moot since the GT is unavailable in the size indicated by the OP, and has been so since the beginning of the year. The popular sizes are probably available only in the first month of a new model year.
So, your bike choice is between the WT, or something else.