How Much Weight is Too Much? Got New to Me Engine

Same motor as the 200 /225 from 1988 to 1999

i am looking at a 91 200 johnson that has 90 pounds at all six cylinders. his says 115 pounds. if the motors are the same, does this mean the one i am looking at is worn out? my 79 150 evinrude has close to 105 at all 6 and that already had me worried