That said I noticed swipe having a harder time holding threat than before, especially in heroics with a caster heavy group and no 10% AP buff or might/kings/battle shout. In raids I have to tab maul and focus a lot more than before.
Simply put on a pack of say 4 mobs, you are swiping all of them and mauling target A and b with glyph of maul. Random DPS is single targeting target c. Spaming swipe till you are blue in the face will not keep agro if that person continues to attack c.
There are also scaling issues at work but that is for another long and annoying post.