Note I said "for me" and "bar the weather trio" (which includes Kyogre fyi).
The Regis are boring both aesthetically and typewise, and have sucky stats.
Lati@ are strong, but I've never really liked them, and they don't have a very good backstory. Plus they look stupid with their little arm things.
Deoxys just looks bloody stupid, and pure psychic? Change the ******* record
Jirachi is ok, but it's always been a bit 'meh' to me.
Meanwhile I like the weather trio. So there you go, lists why I don't like most of the 3rd gen legendaries, meanwhile, I like most of every other gens set.
P.s Virizion can beat Kyogre one on one