There are some differences between the charts you should be aware of.
MT4’s daily candle begins at 00:00 GMT+1; whereas the Marketscope chart begins at 17:00 EST so the candles Open/Close/High/Low information will be different if you compare the two. This will affect the values being input into the indicators if it’s using the OCHL in the indicator calculation. It’s not that one is accurate and one is not, that’s just the way the MT4 charts work.
Also, on Marketscope, the close price of one candle is the open price of the next candle. On MT4 the new candle does not begin until a new tick price occurs. If there’s a 2 pip difference, between the last price on the previous candle and the next tick on the new candle, there will be a 2 pip “gap” between the close of the previous candle and open of the next. Another quirk with MT4.
Both will update with the same speed.