Demonic Vigor would be the only one that would really concern me. It's possible the sim is overly optimistic on how many orbs you can pick up to extend the buff, or that you aren't picking up enough orbs. Otherwise, it's hard to compare 1 log with sims. I would look through all your logs to see over multiple fights your uptime on those buffs. For something like concordance, taking a look at some of my most recent fights, we had people ranging from 20-40% uptime. RNG is RNG. Especially in a 4 minute fight, 10% difference in uptime is just a couple procs - pretty normal variance.