Bell forces BB data plan switch...

So, I know that the Z10 doesnt use BIS, but Bell forced me to switch my iPhone plan into a BlackBerry plan and I was going to only get 1GB of data. I was on the phone for an hour IN THE STORE and they said they could give me the exact same plan I had with my iPhone but I would have to pay $7 more per month...

I thought any data plan would work? Are they just scamming me?

Can anyone from Bell (or Rogers) confirm that a regular iPhone/Smartphone data plan should work?