The point of this thread was never if they can be beaten, and certainly not if the R1 can be beaten.
The point is that they break the tactical part of the game simply because they perform the roles of multiple toons, usually better than them. For example you never have to choose between a cleanser, a healer or an attacker to put in your last spot in your team, like every other faction has to, if they even have toons that can perform all these roles separately. Empire doesn't have a cleanser, BH don't have a healer etc.
You can replace 5 toons, an entire team,of abilities, with the duo and still have another 3 spots in which you can put whatever you want: the 3 strongest stand alone toons, counters for the most important counters that Chaze have, rebels for their insane synergies that are absent in other factions etc.
That is the reason why they break the tactical part of the game.
And btw nobody can take you seriously when you say that there are "many" teams that beat them "at ease". They can be beaten, but not by many and not with ease.
