Timing belt for Fluence 2.0 F4R and Megane RS F4RT

Hi, I'm from Peru, hehe, greetings! Anyway, what I wanted to ask is. I need to change the timing belt, but very few units arrived in my country. When I went to the store, they told me the F4R kit fits my RS MK3, they have the same part number. They gave me the Fluence 2.0 (not the GT) as a reference, but I doubt that's it. Could someone please clear this up for me? Otherwise, I'll buy an RS kit. Do you know if the RS belt is more durable than the one in this kit? Except for the water pump, of course, I'd have to get that separately.