I think most of the MT4 brokers will have CFD's which reflects the books/volumes traded on their servers and the books might not reflect the right values also, coz, the broker they themself will be on the other side of the trade in an instrument and they can make the books how they want the users to see. Also, in MT4 the volume that we is the number of trades than the volume itself for any instrument (same goes with the data from FxCentral's MT4 platform, even though the data is from NSE, volumes are trades)
Cheers!
Cheers!