yes, dramatic as in
MGS2 versus Metroid Prime or better
I guess they will use the Too Human engine or something similar which ought to be much better than the Prime engine and will make MGS2 look like crap
I wonder what they will change with the gameplay, im expecting a totally revamped leveldesign, new moves, story tweaks and just the main story taken over (as in, who is evil and what he plans, and who wins) which obviously leaves room for alot of change