what exactly is the wrong part? defense numbers given at the bottom or numbers in the table?

Ignore these kids, nothing is wrong. The % CtH amounts just rounded up numbers for a easier overview, so there is a max. potential difference of 0.49% if you dont do roundings and the defense class amounts are based on defense average numbers of active tournament players from eu, which I constantly meet in competitive 1v1 tours. Everything else is multiple times already explained from me above.

How would a Grief's "Ignores Targets Defense" affect this table?

ITD does not apply to any of the following:

Player
Mercenary
Champion
Unique
Super Unique
Boss

thank you!