Why doesnt my 2005 sts v8 feel like it has 70hp more than my 2010 p71?

Why doesnt my 2005 sts v8 feel like it has 70hp more than my 2010 p71? - 1
Added (1). The caddi is rated at 320hp 315torque the vic is 250hp 297 torque. The caddi has a 5 speed the vic has a 4. The cadillac is faster but mot significantly. We even kind of tested this i was in the caddi and my uncle was in the ford when the light turned green i punched it and he wasnt expecting it so i jumped him good. But after he floored it he kept me from pulling on him. Both cars are stock and run good.

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