Crank\BB Compatibility Help

I have moved a Hope EVO crank from my Stumpjumper FSR 2018 which has a Hope PF46 (BBPF467330SSN) fitted. I bought a GX Eagle crank (00.6118.490.004) however this appears to be too narrow as it becomes rigid before achieving the torque rate. Where am I going wrong?

Can anyone offer any advice please?
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