Assuming you mean F228Be...
The former is a bit brighter of a speaker. Dynaudio uses a larger tweeter, so it starts beaming earlier and ends up sounding darker in-room. Some people like this effect for music, but for movies it tends to make the soundstage sound small. The Revel is also less height sensitive than the Dynaudio due to using a 4th order crossover. On axis, they are similarly neutral, the former just has wider dispersion.
The former is a bit brighter of a speaker. Dynaudio uses a larger tweeter, so it starts beaming earlier and ends up sounding darker in-room. Some people like this effect for music, but for movies it tends to make the soundstage sound small. The Revel is also less height sensitive than the Dynaudio due to using a 4th order crossover. On axis, they are similarly neutral, the former just has wider dispersion.