How come my level 10 nuker can learn meteor shower and other high level skills?

The minute I got to post-searing with my level 10 nuker, I went to the skill trainer. I went to fire magic and saw meteor shower, phoenix, and other high level skills able to be purchased. I am thinking it has something to do with my old nuker I had months ago. It was PvP and I earned enough Faction to get meteor shower. I purchased it and never used my character again. I deleted my PvP character shortly later. After I beat the game with my monk and my warrior I created a nuker (the one in question). I am wondering if unlocking the skills with my old PvP character have anything to do with the situation. Any input would be greatly appreciated.

Yes, unlocked skills are now available at skill trainers, per an update months ago. See guildwars.com update page for the details.

They're just eliminating some more grind for us.