Honestly sounds to me like just a basic supersaw pluck. You could pretty much do this: https://www.youtube.com/watch?v=tCow165uLxc on any synth VST, doesn't need to be sylenth.

Sounds like in your example they also have the noise oscillator a little louder than in the youtube example. The general concept for all pluck sounds are the same, you can just change things here and there (wavetables/wave type, unison, filter amount, pitch modulation amount, effects, etc) to taste.

I'd also like to get a little sappy and say that it's a really good learning exercise to try and copy others' sound design, but it gets to a point where for most sounds you'll never get it EXACTLY the same, nor should you, because you're you and they're them and each of you go about making music a little bit differently (which is part of the beauty of music really)

Hope this helps!

To get a strong pluck sound, it is great to find a synth that allows you to customize the attack shape. Usually the more convex the attack the more plucky the sound is. If you have a synth where you can not set the attack shape, you can still use the so-called recursive modulation to shape the attack of the amplifier and the filter.

Here is a video and text tutorial about it:
10 Tricks for Access Virus and search for "Recursive modulation" on the page.. it works with most software synth, e.g. with NI Massive.