Yes, you are right. Most people won’t notice it as the gap is small. Just I bought the Prime S and used it first couple days before getting the Optimus 2 so I immediately noticed the difference, if I had done the other way around that wouldn’t have happened. Just a little bit disappointed when I noticed that.
Btw about the lift to wake screen timeout (the timeout on Prime S is longer (3s) vs Optimus 2 (2s)) is definitely on software right ? Is that something can be added to the next firmware update ? (I see other people are also asking for that in some other threads about the watch in this forum i.e Lift To Wake timeout )