Single counterexample for single counterexample: Belgium's Leopold - not sure if Western colonialism is so much better (and notice I didn't even bring up "western India")
Not so much better but better in general compared to the middle eastern/eastern colonialism.. westerners have good competiton that the atrocities will be self corrected by itself but middle eastern/eastern colonies needed external western support like Korean war, hiroshima/nagasaki.. main example I can think of opposite is china under deng but there too deng had become relatively capitalist to fix the issues.