This talk of when they make boost is a bit vague and can't really be compared as it will depend on many many things... What manifolds you have, head work, cam, cam timing, mapping, what gear your in, what your ratio's are, what size wheels you run, how much weight your carrying and if the road is flat/incline/decline etc..
My gears for example are really really close (top out at 125mph) so i get through the rev's really fast leaving less time for the turbo to spool giving the illusion of a laggy turbo.
When I ran my old box which was really really long (theoretical top speed of 188mph)with 17" wheels it was the exact opposite.