Is the first order the strongest team at the time?Is there a team,which can not be defeated by them?

I was really impressed by the TM gain those FO toons got and I do think they are strong.

But considering that I rarely use a toon and can usually wipe out any kind of opponent out there I would say they are not the best team on offense. Even with clones that are terrible in the current meta I can take out a number of teams, which I say to display anyone can win on offense, the real test is if a team falls out of the top spot or top 5 over night.