My decay between 20 minutes and an hour is far better than most riders, maybe 5%? I attribute that to 25,000 miles or so distance running since I was a teen. I think most people's decay is probably 10%, people with that kind of profile sacrifice a lot of burst, which I'd rather have in bike racing. Steady pacing just doesn't translate well.
Its good for TTs and Hill Climbs, but for me that struggle in races is always if I can hold on to the surges. Even if I have a better FTP than everyone in the group, I'm not riding them off my wheel and I can't pull big 1 minute power like they can. I'm aware of this so I usually try to be one of the first 5 wheels during those points.