Wield Oversized Weapon [Epic] is on pg 153 of Complete Warrior. Compared to Monkey Grip on pg 103 (shown below WOW), it looks like all you get for 25 STR and 21 BAB is +2 to hit and the ability to use large double weapons or large weapons in offhand. Is this for real, or am I missing something here?
Monkey Grip, STR 25, Base attack bonus +21,
You can treat any weapon as if it were one size category smaller than normal and one category "lighter" for the purpose of determining the amount of effort it takes to wield. For instance, a halfling with this feat could wield a Medium short sword as a Small light weapon, or a human could wield an ogre's Large greatclub as a Medium twohanded weapon. The weapon still deals its normal amount of damage.
This feat subsumes the effects of the Monkey Grip feat. The feats' effects do not stack.
You may only wield weapons of your size without penalty.
Compare this with Monkey Grip:
Base attack bonus +1,
You can use melee weapons one size category larger than you are with a -2 penalty on the attack roll, but the amount of effort it takes you to use the weapon does not change. For instance, a Large longsword (a one-handed weapon for a Large creature) is considered a two-handed weapon for a Medium creature that does not have this feat. For a Medium creature that has this feat, it is still considered a one-handed weapon. You can wield a larger light weapon as a light weapon, or a larger two-handed weapon in two hands. You cannot wield a larger weapon in your off hand, and you cannot use this feat with a double weapon.
You can use a melee weapon one size category larger than you are with a -2 penalty on the attack roll, and the amount of effort it takes to use the weapon increases. A larger light weapon is considered a one-handed weapon, a larger one-handed weapon is considered a two-handed weapon, and you cannot use a larger two-handed weapon at all.