Fact. I also respect Ferguson, but I clearly remember that he was criticised for not doing better in Europe. There was a desire for Manchester United to dominate in Europe like they did in England and it never really happened. But at the end of the day, it doesn’t take away from the greatness when you look at the full picture. When a manager’s career is over, you get a greater perspective: you focus on the successes and ignore the failures. That’s the point.
With Guardiola, his career is still ongoing so we don’t know what else he will achieve. But he’s already one of the greatest managers of all time and will always be considered so, the haters will just have to accept that.
I divide Fergie's CL record in two phases really:
Phase 1: 1996 - 2004
1997: Lost to Dortmund in SF
1998: Lost to Monaco on away goals in QF
1999: Won
2000: Lost to Real Madrid in QF
2001: Lost to Bayern in QF
2002: Lost to Leverkusen on away goals in QF
2003: Lost to Real Madrid in QF
2004: Lost to Porto in Last 16
That was a disappointing period of time because a) we lost four times to teams who we should have been considerably better than and b) failed to build on our 1999 triumph and create a short term dynasty in Europe.
We then went through 2 years of European oblivion after that, getting spanked by a superior Milan team in 2005 and going out in the group stages in 2006. We were not competitive domestically then either, as team was rebuilding. Afer that:
2007: Lost to Milan in SF
2008: Won
2009: Lost final to Barcelona
2010: Lost to Bayern on away goals in QF
2011: Lost final to Barcelona
2012: Knocked out in the group stages
2013: Lost in Last 16 to Real Madrid
I find it hard to be disappointed with that period to be honest, despite us winning only once. Barcelona were a generational team, the same level of performance would have won us additional two cups between 1997 and 2004 probably. Bayern and Madrid results were absolute freaks dictated by our players getting sent off in crucial moments of the game, some 30-40 minutes before the end of the second leg with us comfortably cruising towards a victory. Hard to be angry about that. 2012 was absolutely freakish year overall.
I think Fergie figured out Europe towards the end of his career, he couldn't overcome Barcelona which is a shame but otherwise did extremely well. He took a more pragmatic approach which resulted in us never getting knocked out by an unexpected team, we hardly ever lost away from home in that period.
Pep's CL record is different because all his success came virtually in his first three years. Everything that happened afterwards was a failure - he got spanked at Bayern in the end while having the best squad in Europe, he has so far got knocked out by inferior teams at City too: Monaco, Lyon, Tottenham. Destroyed by Liverpool too. It's almost like he has gone the reverse compared to Sir Alex, he had the competition figured out early in his career but actually stopped being good at it later. He's still a spectacular manager but to go 10 years without a final and then lose after such a poor game is definitely a dent on his record. He will probably win it 1-2 more times but at one point it looked like he was really going to dominate the competition. Never expected Zidane would have as many CL wins as he that quickly.