"Who is going to stop them winning everything if they are in that mood?" Burnley manager Sean Dyche asked.
City are second in the Premier League, four points behind Liverpool, and into the League Cup final against Chelsea on February 24. They are also through to the last 16 of the Champions League, with a favourable draw pitting them against Schalke.
Guardiola is managing to rotate his squad for games in this fixture pile-up without his starting team losing any fluidity. City's bench against Burnley, for example, contained Aguero, David Silva, Raheem Sterling, and Leroy Sane. The latter two weren't needed as City made it 108 goals in 36 games for the season, an average of exactly three per match.
"Everyone has been involved this month. Everybody plays," Guardiola said. "All together, we can achieve it, arriving at the latter stages [of the season] in the right moment. It's the only way I understand when you are in four competitions."
• Infamous for decades for their violent fans, Millwall had gained a reputation in recent years for being FA Cup giant killers. Both sides of the club were on show yesterday.
The Championship outfit scored in injury time to eliminate Premier League opponents Everton 3-2 and have now won five straight FA Cup home games against top-flight opposition dating back to 2013, when they reached the semifinals.
But the victory was marred by off-field violence. Fans fought before the match, with one slashed in the face. He was taken to hospital and his injuries were not life-threatening.
Everton became the sixth Premier League side to lose to lower-league opposition, after Fulham, Leicester, Cardiff, Southampton and Huddersfield. Within hours, there was a seventh as West Ham were stunned 4-2 at AFC Wimbledon, languishing in last place in the third tier.
Wolverhampton avoided becoming the eighth only by scoring in the third minute of injury time to salvage a 2-2 draw at third-tier Shrewsbury.
- AP