lol, tzeench is the most op mark if used correctly - for armor trade elder with same build is a bit near but50-60 less ehp is a lot to be effective in trade
Tzeentch can be employed well, but only by the more skilled players. Those same players could also slot another Mark, or none at all, and be at least as effective and probably more so. Doesn't detract from the shitness of MoT.