Different Sound When Applying Sonarworks SoundID Reference Calibration to RME TotalMix Room EQ

Hi,
Recently, I exported the calibration values from Sonarworks SoundID Reference and applied them to the Room EQ section in RME TotalMix. However, when I compare the sound between SoundID Reference and TotalMix with the same EQ values, they sound noticeably different.

Here are the listening conditions I used:

1. Same sound pressure level (measured with RMS meter)
2. Same listening position

Could anyone explain why this difference occurs?
For reference, I'm using the RME UCX II interface.

Thank you!