But DPS isn;t the only consideration. The Darkglare has a cooldown, plus it is tied to Doomed targets and Demonic Empowerment, , I'd suggest that it's therefore less useful for "kill this priority add quick" than Demon Bolt for example
As I said, it's a common practise for Blizzard to make tier talents approximately equivalent, so it should come as no surprise (apart from the surprise that they've actually managed it, which they often don't!) - roughly equal damage, different situational usefulness.
- - - Updated - - -
Just try it, it's hard to explain, easy to experience. The guardian pets just aren't reliable, it's easier to think of them as DOTs with legs
The felguard has all the usual pathing problems that pets have, as well as being (obviously) melee. I don;t think they've significantly improved the AI, and I played the Demonic Pact raid bitch for a while in Wrath, and it weas always a problem, particularly in any instance where you jumped down places, or got teleported into "other dimensions" (as it were)
Incidentally, is anyone really still holding out hope that demonology is going to get any changes or buffs to make it viable compared to destruction or even affliction as a progression/Mythic spec?
The last few patche smake it obvious we're very much in a small-tweaks-only phase - I can;t see them handing out big buffs or chaning spells to instants this late in the game.
Maybe after they see hardly anyone running demo in raids outside of LFR and the few diehards pulling really bad numbers - a couple of months too late when we've all levelled our destruction artifacts.