All this means is that the HK amp has a higher sensitivity. Many "consumer" amps are rated for -10dBV on the inputs, while "pro" amps are usually rated for +4dBV. This means that most pro amps require a much stronger input signal to reach rated output.
The only meaningful way to compare your two amps is to run a test into clipping, (prefereably, using test equipment
). The generalizations you're making between the two amps have no basis in objectivity - they're just subjective observations that really tell nothing about the actual capabilities of the two amps.