Agreeing with Ralph.
Rock goes with the wet "thud" sound. Kaya loose tuning. Again, you don't need logic there. It's with the prefered sound. Funk goes with this as well.
Jazz goes with more resonance and ring, that's why most jazz drummers prefer to have a smaller diameter bass drums such as 18" and 20". Some goes with 16". And aside from Jazz, ringy and resonating bass drum is also preferred by RnB and Hiphop drummers.
And with all due respect sir, I don't mean no harm, hayaan mo na lang sila kung bakit ganon sound ng bass drum nila. Sa pagiging drummer kasi madalas tenga ang ginagamit sa pagtono. No logic, mathemathics, physics required. If what you're hearing from the bass drum sounds good to you, that's great! If you're not happy with it, re-tune it to your liking.
Again, preference. No professional tuning, just ears.