This is like the old joke, "Doctor, will I be able to play the violin after my broken arm heals?" "Yes." "Funny, I couldn't play the violin before I broke it."
If you're looking for 100% feature parity between Keynote for iOS or Mac vs. Keynote in iCloud... I can't tell you with certainty. In the end, it's going to depend on whether the features of the iCloud version are sufficient for your needs. Nobody else is likely to know exactly what your needs are.