What I mean is that if a character has shown that he is strong enough to fight a 5-C character, it does not matter how he gained the strength to fight this 5-C character. For example, 10-Year-Old Ben Tennyson is 10-B, but he becomes 5-A because he fights an alien like Spidermonkey, who is 5-A 5 years later. He can also fight Pierce (I think I didn't spell his name correctly), who can fight 5-A characters. There is no mention of any training or extra strengthening that could show Ben Tennyson going from 10-B to 5-A in 5 years. It seems strange to me that a child who is an ordinary human without the Omnitrix has 5-A AP and MFTL+ reaction speed, but since the character has feats to support this, it is not seen as an outlier.