Aaaah,Reverb is after amp blocks in both presets, but after cab in only one. Cab block increasing level might be part of the problem. The main output slider is also higher in every scene of one preset: 16-20 dB vs. 11-12 dB.
The steps I mentioned are a possible quick fix, but changing the routing (keep reverb near end or after cab at least) and avoiding post-reverb gain differences (bring everything around 0 dB and adjust amp level) would probably be more ideal.