If you post a snapshot we can take a closer look at your specific case, instructions on how to do that here:
edit: you still use lava lash, even though it is a lower priority spell. The totem has a pretty high chance to trigger and the buff duration is long, so uptime on the buff is decent for the totem of quaking earth.
That said, e.g. our best-in-slot says totem of electrifying wind is slightly better, so there must be something specific about your case causing attack power to come out a bit ahead of haste. Either way… the difference is so small that it doesn’t really matter, both are good totems. Do you like haste or attack power better? That’s as valid a reason as any to pick one of those items over the other.