@LXF, somehow I knew you were going to bring that up again. And I'm not going to bother replying to you because I probably have the lowest possible opinion of you.
@creamyjeremy, by "tricky to hit with weakness" I mean that a lot of people forget that all that an Arceus player has to do is use the Omniscent Arceus Lv.'d up on the pokemon that will give their opponent the most grief. Then they have many, many ways of killing you as long as they have a rainbow and a dce. Honestly, the game I played against Arceus might have played out differently if I had hit heads on that reversal to try and bring up the Dark Arceus...the only one immune to Darkness Howl. But, I doubt at that point it would have mattered.
And in all honesty, I doubt Arceus has that many matchups that could be considered tricky at the least. DialgaChomp? LuxChomp? Need I remind you that all pokemon in that deck have 2x weakness, and because of the nature of the deck the player might be inclined to not play at full strength, thinking that Arceus is a weak deck. By the time they realize what the deck can do, it's too late. I don't think trainer lock is going to hurt Arceus THAT much, but it certainly is a hindrance. The only decks that Arceus should really fear are Machamp and maybe Mightyena/Umbreon/Vileplume.