Yes, the reverb/dry mix circuit where dry signal is extracted from the second preamp stage through 3M3 paralleled with 10 pF, you'd have to expect a little hi frequency peaking there. You could remove the 10 pF cap, or reduce it for a flatter response. Or increase it for more zing if that's your thing.
Try as you might, there's always going to be a difference because of that mix stage plus the makeup gain stage - one of V4's triodes - that follows it. C'est la vie. Somehow Fender has millions of fans in spite of these quirks.