More factually, Optimus uses 5 FCMs. 3 of the 5 FCMs offer the TT platform... ADM, Wedbush, and AMP. Of those 3, AMP offers better intraday margins, which you are looking for as well. This is a good example of why FCM choice is important, in addition to the policies (and perceived safety) of the keeping of your money! Equivalence isn't always equal.
I start to wonder why a guy who needs 500 $ margins on the ES, who does not know what a FCM is and who cannot compare a fistful of brokers by himself needs exactly the TT platform...
All of this can be cleared up by contacting TT sales. Our sales reps can work with you to find the ideal broker. https://www.tradingtechnologies.com/contact/