Interesting, so if a user doesn't login to their trading account after a certain amount of time (a few days?), their data is expunged from the Outlook tracking? What if they still have open positions?
Since the Outlook page is only tracking active accounts, then that explains why the profitability figures are so high - survivorship bias. Accounts which are no longer trading (due to losses) are dropped from the tracking results, thus skewing the figure higher for the active accounts.
The Oanda numbers are heavily skewed by their inclusion of interest paid on accounts. A $100 account not used in years, but that accrued a few cents in interest every quarter, is counted as profitable.