I agree.
I have done it myself.
I had over 500 hours on a B200 and hours on a B1900, both of which are certified as Single Pilot Planes.
However, both planes were operated with 2 pilots due to regulations and insurance requirements by the people being flown.
So, the time counted towards, actually not towards,but for all of the 500 hours Multi Pilot Operations.
But, as others have said, you will need your Multi Pilot Type Rating for the issue of your ATPL as the B200 does not fall into that category.
I didnt even need to do a MCC as a letter from ones employer stating you have flown 'x' amount of hours in 'x' environment under 'x' regulations and with a quick look through your log book an exemtion was issued with a rather large financial saving.
Good luck.