The trackpad in the ntMBP 13" I had was louder than the one in 12" MB. When I tried later in the store other computers (all 2016 MBP models), I had a feeling that some were louder than the others, but it's actually hard to compare in a noisy place.
Funny...that was my exact post a few hours ago. I described the sound "tink" instead of my previous "thunk". I think the difference is due to the decreased mass available (making it too thin).
I was also told in jest that I was "Clicking it wrong"
Unfortunately, it is true. I noticed this right away on my 2016 15 MBP w/ TouchBar and have seen others that sound and feel the same. The 2016 generation's force touch trackpad sounds more hollow and clunky. I thought the previous generation's force touch trackpads had a really lovely sound and the perfect tactile feedback.
I've tried the various feedback settings and it doesn't make a difference - the sound/feedback is simply different. At first, I was horrified, just because I really enjoyed the last generation's trackpad so much, but I find I've gotten used to it.
System Preferences>Trackpad>Point and Click> Second row from bottom, slider control labeled "Click". There are three options: "Light", "Medium" and "Firm".