StrCmp works ok with numbers?

I've been using StrCmp to compare numbers, and just realized that perhaps I should be using IntCmp.

This seems to work fine, but perhaps ignorance is not bliss:

StrCmp $R0 1 RegIsOne  RegIsNotOne

  RegIsOne:

    ; do something

    GoTo PastTest

  RegIsNotOne:

    ; do something else

  PastTest:

With numbers, are StrCmp and IntCmp equivalent? If not, what is the difference, and is IntCmp preferred?

I ran across this thread the other day, and I think it covers your question: