I rethink... Regice is better, because that means they don't waste their time to move on to Gen3 (and sooner or later we will get Regis anyway), since Gen4 has a lot of legendaries. This only makes them waste their time and needlessly lag themselves further.
There are also those who may have missed them out, but sucks to be them if their breakthrough never gives what they lack. 6 legendaries vs 5 breakthrough if lucky, chances that Arceus/Willow/whoever in charge of sending breakthrough/RNG screws your Dex's blank slot.
There are also those who may have missed them out, but sucks to be them if their breakthrough never gives what they lack. 6 legendaries vs 5 breakthrough if lucky, chances that Arceus/Willow/whoever in charge of sending breakthrough/RNG screws your Dex's blank slot.