״As far as the “why” these categories are on a higher madreiga than others, ‘coffee addict’ proffered the reason being that because he’s מחויב in more מצוות concerning a כהן. But that point isn’t applicable regarding a תלמיד חכם, who has the chiyuvim as everyone else״
ה judges a person based on his/her level therefore a ת״ח since he knows more is judged stricter than a regular person so your premise isn’t fully correct