Hi, the reason I mentioned it is because I am supposed to have data feeds from the same company, and MT delays quotes. There are ways to improve it, like making sure there are not too many data feeds (market watch window) open. For my testing I had about 3 pair charts open for both platforms.
I recommend getting a MB Trading free demo account, and /or a VT Trader free demo charting account. Especially the MB gives me a pretty reliable stream and will time stamp quotes if you set it up properly in the watchlist window (right click on the column label and add time). It has a charting beta version, but it can be unstable with it running.
If your MT demo just temporarily freezes up, or has data gaps in back fill, it is not a good sign. Otherwise do the testing during announcements comparing quotes. Keep in mind that they will not be exact, as MB has a variable spread, and you may have a fixed spread. The delay that I am talking about can be up to 10 seconds, so you will see it if it is major. Also I usually use the EUR /USD because it has the high volume.
Good luck with this, VT trader is my preferred platform and has free feeds. I do use MT for longer term charts, because it is a more stable platform. VT is just technically amazing, and does offer auto trading and custom indicator alerts. Anyhow let me know if you have set up questions.