Like the tent poles required to hold up a tent, all your muscles must be taking equal pressure and of equal strength in order for your body to function correctly. (womenshealthandfitness.com.au)
When two children of approximately equal strength or power are engaged in a fight, it is not bullying. (educationworld.com)
Even more important, there are many different forms of beauty of more or less equal strength. (religion-online.org)