A little confusing inconsistency

[Jukka A. Ukkonen]

Hello all,

Why does sysctl report hw.platform on arm and hw.model on amd64?
The content is apparently intended to be analogous.

E.g. on RPI2 ...
hw.platform: bcm2836

and then on amd64 ...
hw.model: AMD Opteron(tm) Processor 4162 EE

Is this just a little lapsus or intentional for some reason?
I noticed this when I tried bsdstats on RPI2. It complained
about missing OID hw.model.

--jau