AFR misleading? Plugs tell a better story?

AJ/FormS said

naw, if the lobes are fine,that cam is fine. With 170psi pressure, across the board, all you need is to stumble on the right tune.

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Do you mean it is not losing a lobe ?
My thinking was it may be a poorely thought out grind.
It idles like a big grind but doesnt pull up high like a big grind . Kind of dies off around 5k... I-should have gone with the 800 AVS2 but I dont think that is the whole issue with the top end.