I agree it can be taken as you say and it could be consfusing, but... You're reading them as a cumulative sequence. As in "review one, then review another 250, then review another 1000". But they're actually completely separate statements, each taken from your current review stats, so you do currently need to review "one item", "250 more" and "1000 more" for each badge. They're completely separate, not cumulative.
So, it's (potentially) confusing... but each is technically correct.
This is by all of the review pages (correct me if I'm wrong)
So while in First Posts Review, I noticed that it is in fact Correct/Accurate.
The reason that it's different by you Pie, is that you haven't done any close voting yet (almost there though)
IMO: While this method for displaying it, can be a bit confusing. it is not inaccurate in any way.
On a side note...
I would suggest it said something more like:
♦ Steward Review 1000 posts, 950 more to go
P.S. Maybe we should migrate it to Meta.SE as this is across all exchanges and probably causes confusion everywhere.