Surefire g2x pro/6px Pro vs Olight M2R Pro

Besides "pro" in their names and the relative sizes how do these lights stack up head to head?
Surefire 6px pro: amzn.to/2PxB4S5
Surefire G2x pro: amzn.to/31U1ZKn
Olight m2r pro Warrior: Use code "freefieldtraining" to get 10% off everything at Olight Store:
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#lumens #surefire #olight