The Lions completed an Australian tour clean sweep when they beat the ACT Brumbies 13-6 at Canberra Stadium on Friday night.

It was a result that had even Ackermann scratching his head after the Brumbies dominated possession and territory but failed to score a try for the second game in a row.

The result hit Australian rugby with another brutal blow in a year that can only be described as a disaster.

Australian teams have won just three of 32 games against New Zealand and South African opponents this year and one franchise will be axed by the ARU by the end of the season.

The Brumbies are the best-ranked Australian team but have won just three of 10 games this year.

Ackermann, who led the Lions to the grand final last season, refused to sink the boot into Australian rugby, adamant there is hope.

"It is difficult to judge the Australian teams," Ackermann said.

"You just look at the Brumbies and they've got seven bonus points and that shows they've been in the games.

"[Wallabies coach] Michael Cheika made a comment that if they put the best team out there, he still believes they will be competitive.

"I still believe there is a lot of quality in Australian rugby and players. I don't think one can read too much into it.

"There are always challenges, it's the same in South Africa. Is it viable to have five or six teams? I don't want to get into that debate because someone is going to get hurt."

The Lions had just 40 per cent of possession and made 50 more tackles against the Brumbies but somehow found a way to snatch a win.

"How we won, we don't know. It was probably one of the games we played the least amount of rugby in the last three or four years," Ackermann said.

"That makes the win even more special to get a win like that. It was some history and very memorable."

The Brumbies are desperately trying to regroup after slumping to their fourth consecutive loss.

The Brumbies have only twice lost five games in a row since the start of Super Rugby and the new generation need to beat the Southern Kings on Sunday morning to avoid equalling the streak.

Brumbies coach Stephen Larkham will add four players to his touring squad for games against the Kings in Port Elizabeth and the Argentina Jaguares in Buenos Aires.

"We're clear of all the Australian teams but it's not great," Larkham said of the Brumbies' form.

"Our focus is certainly not on the other games in the conference or the competition. We're off to Africa on Monday. We've got a plan and the solution for us is pretty simple - just get the best result next week.

"In terms of confidence, the effort is 100 per cent there. The guys are throwing the ball around and they're trying desperately to score tries. But it just didn't come.

"The guys are pushing hard, but they continue to make some mistakes and that's definitely hurting us."

Brumbies' No. 8 Jordan Smiler was issued a post-game warning for striking with the knee in the ninth minute, but will the incident did not meet the red-card threshold and there will be no further punishment.