I think so, yeah. I would assume the perks include only what they describe, so the $60 tier will get you the golden watch but not the extra keys and the $50 tier will get you the keys but not the watch.
I don’t find it sad at all. I see that really fair. For a game that cost’s $15 dollars, for only $50 bucks your going to get 4 Keys. Your already saving $10 bucks, and your getting access for you and 3 other friends to the Alpha versions.
However if your like me (friends already bought keys), I would think the $60 Dollar Tier would be best for me (even though I went for $75), because for that not only do I get a Key and Closed Alpha Access, but I also get various goodies in game.
It’s a matter of, what do you want more? But It’s certainly not SAD.