The B738 & B739 are long a/c. There is very little flare. True, you have to arrest the ROD, but this is a more gentle and intuative manoeuvre. The B733 & B737 are shorter and allow more of a flare without driving the wheels into the deck. Try this technique on the longer a/c and it bangs in. Now, before you start, I know that the a/c rotates around the longtitudinal axis in the flare, and the wheels are pretty close to it. All I can say is, from experience, there is a difference.
To say all B737's land the same is over simplistic.