Marketing can be every bit as confrontational, but it's usually more passive aggressive. You'll rarely get called out in a meeting, but you'll get outmaneuvered or back-channeled after the meeting is over.

The field is incredibly political. When I worked in marketing, I felt like I was a character in "Game of Thrones." The constant alliances, shifts, backstabbings, feints, etc., were exhausting. Obviously, a great deal of this depends on company culture. But as general disciplines, marketing and sales seem to attract political types.

Given the choice between the two styles of confrontation, I'd much rather have it out in the room, all agendas laid bare on the table, than have to play GoT every day. But that's just a personal preference.