@@_N_Editz_numa luta não existe bem ou mal, e o Silver só fez aquilo com a amy porque ele achou que ela seria uma ameaça para o futuro pelo simples fato dela estar do lado do Sonic, e só pra você saber o Silver se arrependeu do que fez depois e muito provavelmente pediu desculpas a amy e o sonic
Silver and Blaze have similar feats in base form. They both put up a good fight against base Sonic but lose.(Silver only overpowers Sonic by catching him off guard) Silver fights a suppressed Base Shadow to a standstill yes, but Blaze could do that too since Sonic was stronger than Shadow in the 06 era.(unless Shadow takes off his Inhibitor rings).
1 year late but the blaze sprites come from a fan game called sonic gather. You should be able to find it by simply searching for "blaze sprites" until you find an image that says "[old] blaze sprites".