You can't compare our service to that of a LGW/LHR flight. You can do a proper service but just not with 2 cabin cew on a full flight. After many arguments the decision has been made to stick with 2 cc on short/full flights thus the service had to be reduced. Was on a full LHR-AMS the other week with 5 or 6 c/c! Not so difficult to do a service then.
But still I would pick an E-Jet over the RJ any day in terms of comfort. And yes, I am biased....
At least you'll get more flexibility when they go up to six flights a day soon!