The warforged charger is notable for how it seems designed for Warforged Juggernaut entry (even with stock feats, it just needs 2 more points of BAB). But while Adamantine Body as a bonus feat helps with entry requirements, Powerful Charge is redundant with its class features.

Reforged and Landforged Walker are also significantly worse on one than they'd be on a standard warforged.

They have two slam attacks, both at their full BAB, which is superior to the Second Slam feat but doesn't stack with it. The slams deal damage two sizes larger than a normal warforged rather than one, but this benefit doesn't carry over to battlefists (they still love the Beast Strike feat though). Letting them punch through hardness is a bit more unique, especially at low levels, and combined with the Tracery feats it means you could have an attack that overcomes every type of material-based DR... except that Eberron adds extra materials like targath and byeshk.