Not any different from a potato chip brand claiming themsleves as the best tasting. They do this because consumers fall for this crap, collectively encouraging

Not any different from a potato chip brand claiming themsleves as the best tasting. They do this because consumers fall for this crap, collectively encouraging the behavior. If they said "we think it's the best translation but you should read multiple and decide for yourselves", they wouldn't make it to the top of news sites.