Thanks Bayohne, as always!

And anyway... "How can it be difficult if everyone 25+ can do that raid? I can go with my R50 party and zerg rush the sh*t out of it."
Well... DUH!? It's called R25+ because it's challenging for classes around R25+! It's called R45+ because it's challenging for classes around R45+!
What did you want, challenge and difficulty for R25 content even though you're R46? If that's so, reroll a character and do your R25 stuff. That's a Low-Level Dungeon.

Ninja-Edit: I wonder if they'd put a R30 cap for that dungeon how'd you guys react. I think worse =D