One of the problems with flutter and I even tweeted about it back in march
https://twitter.com/CryptoPioneer/status/447358295670816768 you can't determine it's coin cap. So how can you put a price on it??? Very diffilcult when max coins can be between 500 million and 5 billion (something like that).
Libertycoin doesn't have that problem. We know exactly the coin cap and the 1% inflation per year is extremely modest; inflation won't be the thing deflating XLB value.
Fluttercoin also suffers from minimum 60% inflation per annum. That's not including compounding interest. I messaged their dev to tell him this and he just flat out ignores you or calls you stupid.
I personally recieved 7% PoS for holding my coins for 30 days.