GC2 launch angle

[trumb1mj]

I'm plugging my GC2 numbers into the Flightscope Trajectory Optimizer and getting wildly different peak height results.

Here are my GC2 numbers:

Ball speed: 155
Launch angle: 10.5
Total spin: 2005
Carry: 270.2
Total: 300.7
Peak height: 86.5'

When I plug these into the Flightscope Trajectory Optimizer I get a peak height of 55'.

What is throwing this off? Does GC2 use a variation of launch angle I'm not familiar with? Thanks in advance!