It's only easy because the gear you get is quite generous, and most importantly, it's not glitchy like Atheon or Crota. It's meant to be a real challenge, not nearly impossible. The main difficulty is the mechanics, and being under-leveled, if that is the case, just like normal.

I've not finished it yet and found the road up to Oryx was a bit of a let down in difficulty. As for Oryx on the attempts I've tired I've found it tough. That's probably due to being under levelled at the time. Hopfully are team will be at 310 mark this week and might kill him. I think challenge mode will bring a lot more new things to the table and make every fight tough.