XCMG Tractor vs Cat Tractor which is better

XCMG Tractor and Cat Tractor Which one is better? What is the difference between XCMG Tractor and Cat Tractor which is of good quality, the editor learned through comparative analysis XCMG NXG4160D4ZA Tractor,XCMG NXG4250D4KC Tractor,XCMG NXG4180D4KA Tractor,XCMG NXG4251N5KC Tractor,XCMG NXG4250N5KB Tractor,Cat Wheel Tractor-Scrapers 631K (Tier 4 Final/Stage IV),Cat Wheel Tractor-Scrapers 621K,Cat Wheel Tractor-Scrapers 637K (TIER 4 FINAL/STAGE IV),Cat Wheel Tractor-Scrapers 657G,Cat Wheel Tractor-Scrapers 637G performance characteristics and detailed parameter configuration for the majority of netizens to refer to, understand XCMG Tractor and Cat Tractor Which is better, please pay attention to global-ce.