The SF2 contains dry samples. To match hardware:
Set your emulator (like DOSBox or GZDoom) MIDI output device to your virtual synthesizer. For Music Production (DAWs) roland sc88 pro soundfont top
The hardware triggers different sample timbres depending on how hard a key is pressed. The top SoundFonts replicate these multi-samples accurately. How to Use an SC-88 Pro SoundFont The SF2 contains dry samples
Comparison: Hardware SC-88 Pro vs. SoundFont recreation (concise) roland sc88 pro soundfont top