Yeah high variance can mean missing streaks. That's why they need to make misses look exciting rather than just fumbling. Teach the player to get that Advantage since it's so easy and use spells like Bless.
High variance also exists in Skill Checks. I like it less with skills, but it's everywhere in D&D. You can't really fight against it without messing things up.
The Ogre was a bad example since they have only 11AC lol.
