Word meaning "likely to cause controversy?"
Polarizing - In the world of politics, polarization (or polarisation) can refer to the divergence of political attitudes to ideological extremes.
Source: http://en.wikipedia.org/wiki/Polarization_(politics)
Controversial. The adjective you want is controversial. Your sentence then would simply be saying that the one is more controversial than the other. But anyway that's what controversial means: likely to cause controversy or causing controversy.
But if you are just looking for a synonym for controversial, then ask for that (but you could look it up).
- arguable
- contentious
- debatable
- disputable
I think the word objectionable could work in your sentence. The online Oxford English Dictionary defines it as:
Arousing distaste or opposition; unpleasant or offensive.
So your sentence would be: The name Self-Arming Group is not as objectionable as Gun Club, but controversial nonetheless.
contentious -
: likely to cause people to argue or disagree
: involving a lot of arguing
: likely or willing to argue
Source http://www.merriam-webster.com/dictionary/contentious
inflamatory adj. tending to excite anger, disorder, or tumult
http://www.merriam-webster.com/dictionary/inflammatory
The name Self-Arming Group isn't as inflamatory as Gun Club, but is controversial nevertheless.