User blog comment:Natz279/My Dexterity build/@comment-1687225-20121213171351

There are three different arena brackets:

1) levels 1 through 50

2) levels 51 through 100

3) Levels 100+.

There might be more but honestly there's no point in the 100+ brackets because then all the builds would look the same and have the same advantages and disadvantages.

For you, it's definitely worth going up more levels. You have nothing to gain by staying at level 45. Get to at least 50, and if you want to PvP in the level 100 bracket then you have another 50 points to spend.

PvP outside the arena varies but seems to happen most often around the levels 100-120.