But see, whenever the gear is released, you're going to have X is more powerful than Y anyways. If S3 was delayed, you'd have more PvPers going into PvE in order to get some items for PvP. Just like the reverse is true. S3 gear is not universally better than T6. If it were, there wouldn't be a point in doing the raid content. Some items in S3 being "better" than some items in the current raid drops is okay, in my opinion, because it relaxes the issue of having to spread 3-5 item drops amongst 25 people. It also helps that PvP gear is currently better for PvP in most cases, because that incentivizes more PvP activity.
The only problem I see here is some people thinking that they may feel "forced" to PvP in order to be at their absolute max potential. And while I can somewhat understand that, at the same time it is not required to complete the content.