US corporations tend to do that. Instead of a big raise, small raise and "senior". That can even be negotiated in hiring, so you may join as senior for a position just created in the market.
Not only in the US, unfortunately.
I've even seen company creating other kind of superlative, when lead, senior, manager or director was taken.
What about "International Senior Art Director" (even if your job is basic graphic designer in a 25 persons company) ?
