It seems its like in mvc2 where DHC combos are way better than triple super combos. when i first found that out as a kid i stopped using them. The only point for them is theyre like super big F you's it seems.
I believe the triple hyper combos generally cover more of the screen than single hyper combos. With some combinations you can hit them anywhere on the screen. Also, they probably deal a lot of chip damage. Also, if the first character recovers before his allies recvover from their hyper combos, it might be possible to combo afterward.