Yes, you actually can. Oliveira has objectively bad striking defense, it’s always been his Achilles heel. You think he’s been fighting Poirier his entire career? The issue here is when people talk about who’s a better striker they’re almost always talking about who the better offensive striker is, it’s a fundamental misunderstanding of striking where defense is actually more important (and more difficult) than offense. In grappling it’s the other way around, offense is more important (and more difficult) than defense. Anyway, you can argue that Oliveira has an edge in striking (I’d disagree) but imo given how terrible his defense is it makes no sense to say he has a massive edge over Islam in striking. I’d personally give the edge to Islam because of his superb defense.