No it's about the differences in skill.
High PVP skill = good pvp gear.
High PVE skill = good pve gear.
but high PVP skill does not = good PVE skill or vise versa.
Also how ppl with high PVP skill do not care enuff about pve to learn how to do it; but still want the points, rep, and gear.
Although the reverse is probably also true but not to as great of an extent.
The real point I was trying to make was ppl should have to do the reg. instance to unlock the heroic version; then whether pve or pvp oriented they would have some idea of what to do.