Despite the fact that software from metaquotes company is being praised across the whole market by traders of different levels, their platform seems to be a good alternative to it. Just look at it, it has a pretty simple interface and more simple navigation. Buttons are on their places, it's not a big deal to find drawing instruments, as well as it's easy to switch among different order types. I think these are primary differences of this platform. Can't say anything about the optimization as all platforms are optimized well.

Which exact details are you interested in?
Basically, the bottom platform is a bit different from the software from Metaquotes, but at the same time it doesn't concede them in speed.
These guys have optimized their custom solution to the point you barely feel any differences while trading on it. As I said, it's speedy, packed up with various handy tools and of course secure. So, I presume these are primary peculiarities.