I have only driven one on a short test drive so not too familiar, but would expect there to be a good shove from low down. They are torque limited in first and second gear as standard but I wouldn't expect it to feel slow, what are you used to driving?
The other thing is if you weren't giving it a lot of throttle due to being on a test drive then the turbo wouldn't really be producing boost. I wasn't too impressed on the test drive either tbh and stuck with my mk6 ST, but the mk7 is a much quicker car from what I gather.
2005 Fiesta ST
Newman fast road cams, Fusion Fabrications custom inlet manifold, custom exhaust