According ISU Bio, Bradie is 168cm tall. The triple lutz analyzed is the second one in the FS.
The most important difference is the snap angular velocity. The snap angular velocity is the angular speed that the skater is reaching from the take-off position until the final position in the air ( compact position). Bradie's snap angular velocity is approxi. 5% slower than the average data.
N.B I collected around 50 3Lz with correct camera angle and GEO+1, sorted by techniques.
Now, how a skater with a really good flight time can struggle to land a triple lutz? Here some details from the take-off. I put some other skaters who are using the same technique than Bradie. This technique is called " Short draw updown". The distance of legs after the take-off is >50cm and the free leg ( here the left leg) is going up then down before to get the final air position.
4 frames later....
It seems that Bradie uses a lot her left arm. It can slow the legs work because this arm keeps her air position opens too long.
Detail of the 3Lz Nicole Rajicova, Slovakia
Detail Anna Khnychenkova, Ukraine