Not to be rude or anything... But all you need to beat Nem is a pure SR monk... With 2 barbarian levels, or perhaps 3 rouge (Spot) ... Anyway, that build *Could* have a good chance in pvp... So, if anyone want to beat Nem, they can =P ... But it is a lame tactic =D ... Anyway... Nemesis skills in mage battle is great... So dont take it as I am insulting him... Cause he owned me yesterday, heheh (I've been out of mage dueling for 2 weeks or more... Well, cya guys ^^
As Lance said, every build has a weakness
. Admittedly though, mages are quite overpowered. Look guys here's a basic list of strengths and weaknesses (and I'm not taking into account multiclassing) [i could be wrong, feel free to elaborate on this list]
Mage
Strong against: almost all classes
Weak against: pure SR monks, really good archers
Cleric (any)
Strong against: Fighters, Archers
Weak against: Purer clerics, mages, possibly really good weapon masters
Fighter (Weapon Master)
Strong against: any lower AC build
Weak aagainst: any high AC build
, Mages
Hider
Strong against: any build with bad Spot and Listen
Weak against: any build with high Spot and Listen, possibly Clerics and Mages
Builds with palemaster
Strong against: Dexterity based fighters, possibly archers
Weak against: Purer variants of their primary class
Monk
Strong against: Mages
Weak against: not very sure about this one, possibly archers, high AC builds (since they then need to rely on 20s to kill them)
Archer
Strong against: All builds with 'average' GS AC (70ish-80ish)
Weak against: Clerics (WoF spamming ones though or if you don't have remove blindness/dispel)
Well that's all I can think of at the moment, feel free to comment. Note that there are exceptions to these statistics!