No. It's not exact. The piano's feel depends on the interplay between the instrument and the action. The instrument being the soundboard, strings, case, and the action being the key to the hammer, and dampers. The tactile sensation is of course very similar, so similar as to not require much in the way of adapting when moving between the instruments, but it's not exactly the same. The Hybrids don't satisfy classical pianists beyond practice scenarios.
That said many classical pianists are buying hybrids because they're good enough. They're much better than normal digital pianos and they build physical technique in the same way as a grand action does when used properly. The sound is probably about 70 to 80 percent of what a grand piano can do in terms of over all realism, and so that's good enough. People ask the same questions about practicing on an upright then performing on a grand, or practicing on a brand X then performing on a brand Y. If you've done all your preparation on a hybrid you'll want to spend some time on a grand before the performance, getting used to it, but you'd want to do that anyway unless you were performing on the piano you were practicing on all the time.
Hope that answers the question