The B3s kind of have lousy performance....at least ours do. But its not a function of the aircraft specifically, but moreso what we have them loaded down with. Or with what an EMS bird would be loaded down with, depending on fuel load. Just the other night, attempting a night resupply to 3 persons on a 6200' mountaintop, 85% fuel, 2 crew onboard, maybe 200lbs of total extra equipment weight, around 18C. And we didn't have OGE. Attempted to milk down an approach to an IGE hover at a minimum, and found there was no IGE either, even though supposedly we'd have it and winds weren't a factor. Ended up having to make multiple runs by this mountaintop at or just below ETL to airdrop the supplies, and still pulling nearly 10.0 on the FLI with a red underline (limit 10.4 below 40 kts).
So at 9000 MSL? I can't imagine that EMS AStars are flying with anymore than maybe 45-50% fuel, what with 3 crew, all the medical gear, a backboard, a backboard rack, etc. And still have to have weight available to carry a patient of anymore than a medium weight. I'd be very surprised if it was different.
Now, a clean B3 at sea level? That's a performing machine.