If there was a fight between barbells and dumbbells, who would win?
Trick question, they’d both lay there inert because they have no capacity for independent motion so neither would win. Instead, think of yourself as the winner of the battle, the possessor of two distinct and functional tools.
If you are worried you might not have equal strength in both arms, use the dumbbells. They’ll let you know if you have a weak side. If you’re looking to load up on more total weight, use the barbells. If you haven’t used the dumbbells in a long time, give them a try, there’s a whole different feeling of challenge you get from moving around two separate objects versus the barbell.
In the eternal fight between barbells and dumbbells, you are the winner. Use them both… probably not at the same time, but you know, alternate using them.