"So if someone gains strength, they have also gained muscle? Likewise if someone loses strength, they have lost muscle? It is strange because I see some significantly smaller people bench more than me when I have about 15 lbs overall lean mass than them. I have also squated more than some of the bigger guys in the gym."
I did not say that, so please don't put words in my mouth. You can get stronger without getting bigger through increased nervous system efiiceincy, tendon, strength, favorable mechanics, among other things. But, a bigger muscle (note, actual muscle) will always be stronger because more actin and myosin produces more strength along with a larger sarcoplasm which are the two ways a muscle can grow. So, those guys that are smaller than you but are stronger are because of neural, tendon, mechanical or other non-hypertrophy related factors.