He wasn't allow to sell Bayern's players, who are usually quite tall.
Bayern's directors allow you to buy 3-4 players, but that's it.
At Barca and City, Pep sold majority of former players and has built a team based on his ideas.
That usually means David Silva type of players.
But even at Bayern he played his crazy all out attack possession based football with a risky high defensive line.
His ALL knockout matches post Barca:
2014:
Arsenal 2:0, 1:1
Man Utd 3:1, 1:1
Real 0:1, 0:4
2015:
Shakhtar 0:0, 7:0
Porto 1:3, 6:1
Barca 0:3, 3:2
2016:
Juve 2:2, 4:2
Benfica 1:0, 2:2
Atletico 0:1, 2:1
2017: City
Monaco 5:3, 1:3
2018: City
Basel 4:0, 1:2
Liverpool 0:3, 1:2
2019: City
Schalke 3:2, 7:0
Tottenham 0:1, 4:3
So, Pep's total score since Barca in CL knockout rounds is:
28 games
13 wins, 5 draws, 10 defeats
Basically, his win vs loss ratio is 13:10 since Barca.
His goals ratio in these 28 KO matches is:
61:45
But, if you remove monkey-easy matches against Shakhtar (0:0 and 7:0), Basel (4:0 and 1:2) Schalke (3:2 and 7:0) and Benfica (1:0, 2:2) his total goals ratio in a CL post Barca (against semi decent clubs) is:
32:35
So, Pep's goal score vs Real, Man Utd, Arsenal (2014), Porto, Barca (2015), Juve, Atletico (2016), Monaco (2017), Liverpool (2018), Tottenham (2019) is:
8 wins, 3 draws, 9 defeats.
And a negative goals ratio of a total: 32:35
So, more or less, Pep and his teams POST BARCA, in a CL are at 50:50 or 45:55 against any average European team.
And statistically, he will concede 2 goals on average in every single KO match, with every match on average ending 1:2 or 2:2 and an average score over 2 legs will be 3:4 for his opponents.
More or less, this is exactly what is happening with his teams all the time.
Over 28 KO matches, he managed to keep a clean sheet only 6 times.
Against Shakthar, Shakhtar, Basel, Schalke, Benfica and Arsenal.
In 20 KO matches against strong or semi strong European teams: (Barca, Real, Man Utd, Arsenal, Juve, Atletico, Liverpool, Tottenham, Porto, Monaco):
He managed to have 1 clean sheet, lol.
On the other hand, EV managed to have 4 clean sheets out of his 8 CL KO matches in total (Chelsea, Roma, Lyon, Man Utd)
But hey, Pep's teams move better off the ball and play a nicer football...