I don’t know much about the Felt bikes, except that they carry a hefty price tag.
What i do know about the Fezzari is that the bike can handle some abuse. I actually ride with two guys that were on their downhill semi pro team. i went with them to moab and watched them do things on those bikes that i didn’t know could be done. If you’ve ever been there and ridden Amasa Back, they cleaned everything in that switchback corner that has all of the drops. they did it all while being clipped in, on the 6" travel bikes. Those things are built super good. I was more than impressed.
I don’t think the Fezzari would be as expensive as the Felt.