That's just it, sweetness. They aren't smaller than mine, at least, not judging by the pics in your Showcase.
There is a difference between meat on arms.. and when they hang. One is a sign of being thick or big boned, etc. The other is a sign of someone who just doesn't work out.. or lost a shit ton of weight.
Now.. if you're the latter and you've dropped a lot of weight-- congrats, sincerely. But don't try to make it out to be something it isn't.