I just played in the march 18th beta event and im worried about how well i did. I thought some of you nice gamers could help me.

Through just one beta i managed (as a E/N) to get to level 13 and made it to Gates of Tyria. I noticed people on levels 15 and higher there and the enemies on the gates of tyria mission were all 13/15+. So i was wondering two things did is level 13 and gates of tyria a good acomplishement for a beta event? Should i carry on playing or just not bother for my impotence ?
Also did i rush the missions too quick, should i be atempting gates of Tyria mission at a higher level.
I need this off my chest as i loved the game and need to know.