MacBook Pro 13' Retina Late 2013 Trackpad, EFI and Boot ROM Version issue?

Hello Everyone,

This is my first question on Apple communities, since I am fairly new to Mac OS

So I have purchased a MacBook Pro 13' Retina late 2013 a couple of weeks ago, and I noticed that there is a little bit of lagging in the Trackpad and keyboard, like if I leave the laptop for about 5 or more seconds, and come back to swipe up or down the Trackpad doesn't respond right away, I mean it lags a little then it works just fine until I leave it again and come back to it later. This is very annoying, and it does happen to the keyboard as well, because if I leave the laptop and come back to press anything in the keyboard, it will not respond right away it will take a second to respond! (I literally do not touch it for about 5 seconds and it does lag after I start using it)

I have contacted Apple, went to the store and exchanged it with a nother one, but unfortunately, same problem exists!

Here is what I noteiced though, When I looked at the Boot ROM version, I noticed that it is different from all the other (same) model MacBook I have tried either at the store or even by researching online.

My ROM and SMC are:

Boot ROM Version: MBP111.0138.B07

SMC Version (system): 2.16f63

Now every single MacBook I have tried has a different ROM version and even SMC version. For the ROM, I found out that the version is MBP111.0138.B03, and mine is "B07" (the last three degits)

By the way, My Mack is like I said Retina 13' Late 2013, has a 8 GB RAM, and 256 GB SSD, 2.4GHz i5.

Again I have tried the same exact model at the store, and found out that the correct version is installed which is not mine I believe

Can someone please tell me why my ROM version is different, I mean I am running the same OS Apple store computers are running which is 10.9.3

Any help will be highly appreciated!

Thanks