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Again, two different programs using different algorithms to fit curves. You will never be able to get 100% identical curves, but you should be able to match it "close enough"
Several things you could try:
1. add more control points to the sketch Spline (as you show above)
2. use a Conic curve instead of a Spline, and adjust the Parameter to adjust the curve
3. use a 3D Spline with Tensions to adjust the curve