officially (on DD) our spreads are 4 in the dow, 3 in GBP/USD and 2 in Eur/USD
but in October last year we put them to the narrower spreads of 2, 2 and 1 respectively as a test to see if the sytem was good enough to take it.
as the official spreads are still the wider ones that is why the Product Info Sheets say this. Rather like a 'special offer' that are often run by our competitors. This one has now been going for 5 months with no problems but is stll not formalised. At some point DD will probably 'officially' move to the tighter spreads and change the information sheets but not just yet.
But it must be remembered that DD is a White Label and, in the end, it is up to them. LCG does not spend advertising bucks on WL partner's sites and DD does not advertise outside it's own sphere