We did perfectly fine given the shape the guild was in at that time thanks for asking.
I actually don't "want" splitraiding but in the end I don't care. That doesn't mean I find those "blizz pls get rid of split raiding because my world 98324 guild absolutely has to them otherwise we can't even kill the first boss " less pathetic.
Those encounters were perfectly fine tuned the fact that they aren't tuned to be dealt with by every peasant guild including my own in the first week doesn't actually change that. When did you reach blackhand to claim that you had a too low ilvl to deal with the encounter ? 695 was already way more than enough.
We didn't manage top 50 at that time but not for a second I'd make the lack of split raids responsible for that. We had more than enough gear when we turned up on blackhand - that we didn't with 692 was purely lack of skill, preparation and lack of the right players in key positions.