Is powder coating stronger then Anodizing ? That question is like which is better autococker or automag, Ford or Chevy .... etc.... It a matter of opinion.
Anodizing is etched dye into the aluminum at about .0005 to .001 thick and depending on what type of anodizing give it's strength. Type I or II or III, III being the strongest and will alter the tolerance inside & outside of the part.
My powder coating is done on the outer side of the part so inside tolerance are not effected ( which mean you can do over & over ) The coating is thicker then anodizing by about .003 to .005 thickness. Powder coating is baked on at 400 deg. for 20 min. To get a good finish really depends on the prep of the part.
Which are all powder coated.
I can do fades.