Two-Weapon Fighting feat line question

[Astraghal]

A dwarven fighter using dwarven axes that takes the feat: two-weapon fighting, recieves -4/-4 attack penalty right?

Does taking the feat: oversized two-weapon fighting, reduce this to -4/-2 or -2/-2?

[noinfo]

A dwarven fighter using dwarven axes that takes the feat: two-weapon fighting, recieves -4/-4 attack penalty right?

Does taking the feat: oversized two-weapon fighting, reduce this to -4/-2 or -2/-2?

Yes

this is then reduced to -2/-2 with OTWF

[Astraghal]

Yes

this is then reduced to -2/-2 with OTWF

Thanks.

[Dragavon]

For TWF to be any good you also need the Improved and Greater TWF feats. Just having the basic feat isnt so hot ;)