Re: Institutional vs Retail trading tools
Are you talking about virtual trader plugin for Metatrader ? Yes, such thing exists and it can manipulate various things, like stoplevel increase, artificial delay, requotes and so on. So unfair brokers are well equiped.
It can also filter datafeed by adding one-two pips to it, so if your performance differs from one broker to another (number of trades is not thesame), this is propably the reason.