Does as Stonelord's Stone Servent function as a Druid Companion?

[Javaed]

I'm looking for some clarification regarding the Stone Servent, as there are some details that aren't really spelled out clearly.

Stone Servent:
At 5th level, a stonelord may call a Small earth elemental to her side, as a paladin calls her mount. This earth elemental is Lawful Good in alignment and possesses the celestial template, and it increases in size as the stonelord gains levels, becoming Medium at 8th level, Large at 11th level, Huge at 14th level, Greater at 17th level, and Elder at 20th level.

This ability replaces divine bond.

When I review the Divine Bond rules, I read the following:

The second type of bond allows a paladin to gain the service of an unusually intelligent, strong, and loyal steed to serve her in her crusade against evil. This mount is usually a heavy horse (for a Medium paladin) or a pony (for a Small paladin), although more exotic mounts, such as a boar, camel, or dog are also suitable. This mount functions as a druid's animal companion, using the paladin's level as her effective druid level. Bonded mounts have an Intelligence of at least 6.

RAW it seems to me that the elemental would have Druid Companion levels, but it could be that listed size progression was meant to replace those levels. I'd appreciate some clarification.

[SaddestPanda]

Since it replaces the ability the old ability has no bearing on the new one therefore what you see in the stone servant ability is it. Thus it is not considered an animal companion and its progression is just by the size of elemental.

[Quandary]

the 'as a paladin calls her mount' applies to 'call a Small earth elemental to her side',
i.e. the instant teleportation (calling) thing, not what creature you are gaining access to
(and it's abilities, i.e. paladin mounts work like animal companions, etc)
...i.e. the ability as a whole isn't working like a paladin's mount, just the calling aspect.

so you should just use the stats for the given elementals + celestial template, nada mas.

[MurphysParadox]

Yeah, it is important to remember that new abilities of an archetype have nothing to do with the replaced ability.