Yeah -- Sunshine is even significantly harder at 400 than at 525.
As it drops, that ledge gets steeper and the hole harder to skirt/dodge/boof.
It's nasty all the way down to 275. (Haven't been in there lower than that)
I agree with GH -- generally a little easier run than numbers at 500, except for Sunshine which is harder than anything on Numbers at that flow. Sledgehammer is tricky at that low level, too.
I'm planning to run it on sunday if you're interested.