DESTINY'S New Raid For Rise Of Iron Completed In 2 Hours

Destiny's newest raid for Rise of Iron has been completed. Eurogamer reports "Wrath of the Machine" was conquered by clan Redeem in just 2 hours, which is concerning players that the raid may not be as long as advertised. 

I would think that while traditional "raids" in other games are pretty long, I don't think you can do that in Destiny without turning off a lot of people. I can't imagine working on the same mission 3 hours without getting frustrated...let alone any longer than that. 

Do you think the new raid is too short if it can be completed in 2 hours?