As one of those that sits in the pointy bit on the 738, some of the above is true.
Landing a 'greaser' is definately an art. And lets face it, most pilots aim for a smooth touchdown. But in reality the 73' in particular can be a real pig to land on occasion. And believe me i've had more than my fair share of 'firm arrivals'!
However, a firm landing is by no means an unsafe landing and the use of full reverse thrust as apposed to, or in conjunction with wheel braking does save on brake wear and tear, as previously said.
The RYR operation is slick, (it has to be) and there SOP's are S*it hot.
As a pax you WILL notice different sounds and sensations flying on different airlines/aeroplanes, the problem being sat in the back with no forward veiw, is you are left to imagine what is happening and sometimes with a lack of knowlege, your brain makes its own interpretation on whats going on, based on previous experiences.