maybe thats why I remember weilding it with one hand, I had the gloves on and had around 30 strength.
As to spiked chain vs. glaive, it really isn't worth having the spiked chain in this game, except for the visual side of it. In pnp, a glaive has reach, which means you can't attack an adjacent foe. The Spiked chain has reached AND allows you to attack an adjacent foe. Not sure, but I think it is the only core rule weapon to allow both. Hence it's exotic weapon feat requirement (and rather low damage).