My '16 has the Alpine system, for a factory system I think it sounds great, especially for being in a truck. My last two trucks were Chevy's ('15 Silverado and a '05 Avalanche). I did speaker swaps, added sub, amp, etc. Factory Alpine in the '16 sounds just fine comparably. Haven't heard the HL system, but I would think if it's bass heavy, it's that way to meet consumer demand for bass heavy systems. My thought would be maybe the demographic sampling group was a narrower range that wanted the in your face bass. Only way to know for sure what's going on would be to measure the sound levels with an audio frequency meter. I would think the system is tuned to produce dead flat sound from the factory.