Endur said:
Duskblades are broken and a power-gamer's dream for a fighter-wizard.
A first level Duskblade has full BAB, good will and fort saves, martial weapon profiency, heavy armor and shield profiency, can cast more spells than a 1st level wizard, has a better skill list than a fighter, and receives numerous special abilities that are better than any feats that are available. They only have a d8 for hit points instead of the fighter's d10, but that is their only drawback.
In non-combat situations, their spell-list is not relevant, but likewise, fighters are not relevant in non-combat situations, so this is not really a limitation compared to fighters.
This is the kind of unfortunate analysis that led to months of posts claiming that the monk was the most broken class ever introduced - it superficially looks at the paper attributes of the class without putting anything in context.
Where to start?
1st level duskblades only get light armor - the best they ever get is medium - yes you can take the battle caster feat to upgrade that to heavy, but this class is so feat starved that that's the least of your concerns.
While duskblades start with 1 more 1st level spell than wizards, this is highly misleading. First, a specialist 1st level wizard gets the same number of spells as a duskblade and second the duskblade gets a whoping 2 spells (chosen from a very short list) at first level. Also duskblade spells are generally of the instant variety - they have few spells that last more than one round.
Duskblades have a better skill list than fighters BUT they have mandatory skills fighters don't need, namely concentration (a must for casting in combat) and spellcraft (not mandatory but usefull if they want to be semi competant at identifying spellcasting in the field) - they only have 2 skill points per level to fill these skills.
As for "numerous special abilities that are better than any feats that are available" - Hardly, they get combat casting (available as a feat), they can cast some 0 level spells extra times per day (complete arcane has feats that let any character do this, though duskblades can do it more often, but remember 0 level spells), and they get arcane chanelling the signature duskblade ability - this ability allows you to channel touch spells through your weapon (it's nifty, but with the duskblades spell list hardly broken).
And that's just responding the points in the above post - if you do a comparison with the duskblade against a core fighter/mage (fighter/mage/eldritch knight) - you'll note the duskblade is better until 8th level or so, then it's about even (with each having different strengths). If you throw in splatbooks and have the fighter mage be a fighter/knight phantom/abjurant champion - the duskblade gets left in the dust after 8th level or so.
Duskblades are decent fighter/wizards, with good flavor but their not even close to overpowered