^^ true. deep-stacked OOP vs an opponent who you think is better than you is just asking for a headache as they will always have the positional/skill advantage, which is like always having the nuts. but that's to do with the table seating/effective stacks. not what % of your bankroll is on the table. assuming you are adequately rolled, you want to be playing the absolute deepest stacks you can while still having an edge. (and obviously, deep against a very good opponent is not one of them)