It may be fine at higher level BGs to enter before you are near the top levels, but in WSG 16 or lower = ez kill. Argue if you like, but we ALWAYS own lvl 16 or lower in WSG.
I would contest this and say its always annoying to see lower lvl players in a bg. The sevens and up are fine, but sixes and below are real annoying.
Funny story though, i was in Arathi basin while i was still lvling my main. I think i was in my 40's at the time. This lvl 48 or 49 mage was in our group, led the field in deaths. He basically spent the whole bg duking it out with a rogue who was about 6 or 7 lvls below him. Mage didnt get a single kill the whole time.