who is harder, omega or shinryu?

i know alot of people on eoff dont have a difficult time with either of the optional bosses but they are considered the hardest in the game.

omega has the 3-4 counter attacks which are unavoidable but mostly he aims at killing one character at a time (encircle, delta and blaster are all instant kills) shinryu doesnt have a weakness you can exploit and aims at killing your entire party in single hits (blizzard, tidal wave and his mealstrom + lightening combo)

omega can be killed in a single hit where shinryu takes an entire turn.

omega can unleash several attacks in a turn (including his counter attacks) but shinryu generally waits until your party has had their turn before attacking

both are easy enough with the right strategy. just wondered who you thought was more of a challenge