no
Use a Master ball on Suicune but there is an easier way get Suicune. Catch a Pokemon who has the ability of spell tag.
no buttons actually make it easier all it is is chance or if you have one a master ball will always catch but any pokemon fan knows that
Dialga is easier to catch Palkia is a bit tougher to catch but Pokemon level 75 will do the trick.
when the pokeball does the third roll thing say "gotcha" into the mic. or... Paraylism or Sleep will make the catch easier!
The Nest Ball makes it easier to catch Pokemon of a low level.
you cannot catch it. but you may be able to catch it with action replay. the easier way is to trade.
Makes it easier to catch an already caught Pokemon.
You can catch the same Pokemon again but opposite gender, or you could catch a ditto and breed them that way. Ditto breeding is easier.
NO
Most legendary Pokemon (with some exceptions - mascot legendaries, in recent games, tend to be easier than other legendary Pokemon to catch due to being necessary to catch in order to advance the story), along with Beldum, Metang, and Metagross. These Pokemon have a catch rate of 3, the lowest catch rate in the games.
Using a net ball to catch wurmple and other bug type Pokemon is easier.